<div style="text-align: center;"><font color="#ff0000"><span style="font-family: 宋体; ">苏教版五年级数学上册最新期末考试 </span><span style="font-family: 宋体; ">2015</span><span style="font-family: 宋体;">.</span><span style="font-family: 宋体; ">1</span></font></div><br><div style="text-align: center;"><span style="font-family: 宋体;">主编:宜兴市范道实验小学 徐老师</span></div><br><div style="text-align: center;"><span style="font-family: 宋体;">第一部分</span><span style="font-family: 宋体;"> 姓名</span><span style="font-family: 宋体; text-decoration: underline;"> </span><span style="font-family: 宋体;"> 得分</span><span style="font-family: 宋体; text-decoration: underline;"> </span></div><br><div style="text-align: center;"><font color="#38761d">苏教版小学数学五年级上册最新期末试卷</font></div><br><span style=" Arial; font-weight:bold; mso-font-kerning:; ">一、直接写得数。(</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">10</span><span style=" Arial; font-weight:bold; mso-font-kerning:; ">分)</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">2—0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">02= 0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">1÷0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">05= 4×0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">5= 0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">26+0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">74= 12</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">5×0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">8=</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">8b—3b= 0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">52—0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">2= 4a×a= 0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">72÷0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">9= 14÷35=</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; font-weight:bold; mso-font-kerning:; ">二、用竖式计算,减法题要验算,除法题得数保留两位小数。(</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">7</span><span style=" Arial; font-weight:bold; mso-font-kerning:; ">分)</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">4</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">05—1</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">96 0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">65×0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">48 16</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">÷</span><span style=" Arial; Arial; mso-font-kerning:; ">23</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; font-weight:bold; mso-font-kerning:; ">三、计算下面各题,能简便的运用简便方法计算。(</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">12</span><span style=" Arial; font-weight:bold; mso-font-kerning:; ">分)</span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">86</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">9</span><span style="font-family: 宋体; ">+9</span><span style="font-family: 宋体; font-weight: bold; ">.</span><span style="font-family: 宋体; ">1</span><span style="font-family: 宋体; font-weight: bold; ">÷</span><span style="font-family: 宋体; ">(</span><span style="font-family: 宋体; ">2</span><span style="font-family: 宋体; font-weight: bold; ">.</span><span style="font-family: 宋体; ">3—1</span><span style="font-family: 宋体; font-weight: bold; ">.</span><span style="font-family: 宋体; ">6</span><span style="font-family: 宋体; ">)</span><span style="font-family: 宋体; "> </span><span style=" Arial; Arial; mso-font-kerning:; ">3</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">56-0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">. </span><span style=" Arial; Arial; mso-font-kerning:; ">2+6</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">44-4</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">8 21</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">4—40</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">5÷7</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">5</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; mso-font-kerning:; ">=</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">=</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">=</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><br><span style=" Arial; Arial; mso-font-kerning:; ">8</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">52—</span><span style=" Arial; mso-font-kerning:; ">(</span><span style=" Arial; Arial; mso-font-kerning:; ">5</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">52+0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">9</span><span style=" Arial; mso-font-kerning:; ">)</span><span style=" Arial; Arial; mso-font-kerning:; "> 3</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">12+3</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">12×99 11÷</span><span style=" Arial; mso-font-kerning:; ">【(</span><span style=" Arial; Arial; mso-font-kerning:; ">0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">4</span><span style=" Arial; mso-font-kerning:; ">+</span><span style=" Arial; Arial; mso-font-kerning:; ">0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">04</span><span style=" Arial; mso-font-kerning:; ">)</span><span style=" Arial; Arial; mso-font-kerning:; ">×0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">5</span><span style=" Arial; mso-font-kerning:; ">】</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; mso-font-kerning:; ">=</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">=</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">=</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; font-weight:bold; mso-font-kerning:; ">四、填空。(</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">25</span><span style=" Arial; font-weight:bold; mso-font-kerning:; ">分)</span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">1</span><span style=" Arial; mso-font-kerning:; ">、在</span><span style=" Arial; Arial; mso-font-kerning:; "> □ </span><span style=" Arial; mso-font-kerning:; ">里填上合适的数。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><img src="//www.szxuexiao.com/uploadimages/2015/0115/201511510479.png?m=0.9958299158606678"><br><br><span style=" Arial; Arial; mso-font-kerning:; ">2</span><span style=" Arial; mso-font-kerning:; ">、</span><span style="font-family: 宋体; ">学校买来一批篮球和足球。篮球买12只,共用a元,足球买b只,每只25元。篮球单价比足球贵( )元,买这批篮球和足球共用了( )元。</span><span style="font-family: 宋体; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">3</span><span style=" Arial; mso-font-kerning:; ">、</span><span style=" Arial; Arial; mso-font-kerning:; ">500</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">505</span><span style=" Arial; mso-font-kerning:; ">是(</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">)位小数,从左往右三个</span><span style=" Arial; Arial; mso-font-kerning:; ">“5”</span><span style=" Arial; mso-font-kerning:; ">分别在(</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">)位、(</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">)位和(</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">)位上,其中第二个</span><span style=" Arial; Arial; mso-font-kerning:; ">“5”</span><span style=" Arial; mso-font-kerning:; ">表示</span><span style=" Arial; Arial; mso-font-kerning:; ">5</span><span style=" Arial; mso-font-kerning:; ">个(</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">)。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">4</span><span style=" Arial; mso-font-kerning:; ">、</span><span style=" font-family:Arial; mso-hansi- mso-font-kerning:; ">用</span><span style=" font-family:Arial; mso-font-kerning:; ">1</span><span style=" font-family:Arial; mso-hansi- mso-font-kerning:; ">、</span><span style=" font-family:Arial; mso-font-kerning:; ">2</span><span style=" font-family:Arial; mso-hansi- mso-font-kerning:; ">、</span><span style=" font-family:Arial; mso-font-kerning:; ">3</span><span style=" font-family:Arial; mso-hansi- mso-font-kerning:; ">和小数点可以组成(</span><span style=" font-family:Arial; mso-font-kerning:; "> </span><span style=" font-family:Arial; mso-hansi- mso-font-kerning:; ">)个不同的两位小数,请你按从大到小</span><span style=" Arial; mso-font-kerning:; ">的顺序排列起来:(</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">)</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">5</span><span style=" Arial; mso-font-kerning:; ">、据统计,</span><span style=" Arial; Arial; mso-font-kerning:; ">2010</span><span style=" Arial; mso-font-kerning:; ">年上海世博会累计参观人数达</span><span style=" Arial; Arial; mso-font-kerning:; ">73084400</span><span style=" Arial; mso-font-kerning:; ">人次,把横线上的数改写成用</span><span style=" Arial; Arial; mso-font-kerning:; ">“</span><span style=" Arial; mso-font-kerning:; ">万</span><span style=" Arial; Arial; mso-font-kerning:; ">”</span><span style=" Arial; mso-font-kerning:; ">作单位的数是(</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">)万,保留整数约是(</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">)万。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">6</span><span style=" Arial; mso-font-kerning:; ">、</span><span style=" font-family:Arial; mso-font-kerning:; ">○○</span><span style=" Arial; mso-font-kerning:; ">☆☆☆</span><span style=" font-family:Arial; mso-font-kerning:; ">○○</span><span style=" Arial; mso-font-kerning:; ">☆☆☆</span><span style=" Arial; Arial; mso-font-kerning:; ">……</span><span style=" font-family:Arial; mso-hansi- mso-font-kerning:; ">左起第</span><span style=" font-family:Arial; mso-font-kerning:; ">21</span><span style=" font-family:Arial; mso-hansi- mso-font-kerning:; ">个图形是(</span><span style=" font-family:Arial; mso-font-kerning:; "> </span><span style=" font-family:Arial; mso-hansi- mso-font-kerning:; ">),前</span><span style=" Arial; Arial; mso-font-kerning:; ">6</span><span style=" font-family:Arial; mso-font-kerning:; ">0</span><span style=" font-family:Arial; mso-hansi- mso-font-kerning:; ">个图形中</span><span style=" font-family:Arial; mso-font-kerning:; ">○</span><span style=" font-family:Arial; mso-hansi- mso-font-kerning:; ">有(</span><span style=" font-family:Arial; mso-font-kerning:; "> </span><span style=" font-family:Arial; mso-hansi- mso-font-kerning:; ">)</span><span style=" Arial; mso-font-kerning:; ">个</span><span style=" font-family:Arial; mso-hansi- mso-font-kerning:; ">,</span><span style=" Arial; mso-font-kerning:; ">☆</span><span style=" font-family:Arial; mso-hansi- mso-font-kerning:; ">有(</span><span style=" font-family:Arial; mso-font-kerning:; "> </span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" font-family:Arial; mso-font-kerning:; "> </span><span style=" font-family:Arial; mso-hansi- mso-font-kerning:; ">)个。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">7</span><span style=" Arial; mso-font-kerning:; ">、两个自然数相乘,乘积是36的乘法算式有( )个。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">8</span><span style=" Arial; mso-font-kerning:; ">、在</span><span style=" Arial; Arial; mso-font-kerning:; ">○</span><span style=" Arial; mso-font-kerning:; ">里填上</span><span style=" Arial; Arial; mso-font-kerning:; ">“</span><span style=" Arial; mso-font-kerning:; ">></span><span style=" Arial; Arial; mso-font-kerning:; ">”“</span><span style=" Arial; mso-font-kerning:; "><</span><span style=" Arial; Arial; mso-font-kerning:; ">”</span><span style=" Arial; mso-font-kerning:; ">或</span><span style=" Arial; Arial; mso-font-kerning:; ">“</span><span style=" Arial; mso-font-kerning:; ">=</span><span style=" Arial; Arial; mso-font-kerning:; ">”</span><span style=" Arial; mso-font-kerning:; ">。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">27 ○ 0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">27×1</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">2 9</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">8÷2</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">9 ○ 9</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">8</span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">5</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">6÷0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">8 ○ 5</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">6 15</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">5×0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">25 ○ 15</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">5÷4</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">9</span><span style=" Arial; mso-font-kerning:; ">、</span><span style=" Arial; Arial; mso-font-kerning:; ">15 </span><span style=" Arial; mso-font-kerning:; ">公顷</span><span style=" Arial; Arial; mso-font-kerning:; ">=</span><span style=" Arial; mso-font-kerning:; ">(</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">)平方米</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; Arial; mso-font-kerning:; "> 8</span><span style=" Arial; mso-font-kerning:; ">公顷</span><span style=" Arial; Arial; mso-font-kerning:; ">=</span><span style=" Arial; mso-font-kerning:; ">(</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">)平方千米</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; Arial; mso-font-kerning:; ">0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">3 </span><span style=" Arial; mso-font-kerning:; ">千米</span><span style=" Arial; Arial; mso-font-kerning:; ">=</span><span style=" Arial; mso-font-kerning:; ">(</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">)米</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; Arial; mso-font-kerning:; "> 2500 </span><span style=" Arial; mso-font-kerning:; ">克</span><span style=" Arial; Arial; mso-font-kerning:; ">=</span><span style=" Arial; mso-font-kerning:; ">(</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">)千克</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">10</span><span style=" Arial; mso-font-kerning:; ">、</span><span style="font-family: 宋体; ">用一台天平和重</span><span style="font-family: Arial; ">1</span><span style="font-family: 宋体; ">克、2克、5克的砝码各一个,当砝码只能放在一个盘内时,在天平上可称出( )不同质量的物体。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">11</span><span style=" Arial; mso-font-kerning:; ">、王云用</span><span style=" Arial; Arial; mso-font-kerning:; ">18</span><span style=" Arial; mso-font-kerning:; ">米长的绳子围成一个长方形,有(</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">)种不同的围法。(长、宽均为整米数)</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">12</span><span style=" Arial; mso-font-kerning:; ">、已知买白布</span><span style=" Arial; Arial; mso-font-kerning:; ">9</span><span style=" Arial; mso-font-kerning:; ">米与买花布</span><span style=" Arial; Arial; mso-font-kerning:; ">7</span><span style=" Arial; mso-font-kerning:; ">米所付的钱相等,每米花布比白布贵</span><span style=" Arial; Arial; mso-font-kerning:; ">2.4</span><span style=" Arial; mso-font-kerning:; ">元。每米花布要(</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">)元,每米白布(</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">)元。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">13</span><span style=" Arial; mso-font-kerning:; ">、</span><span style=" font-family:Arial; mso-hansi- mso-font-kerning:; ">一堆钢管,最上层有</span><span style=" font-family:Arial; mso-font-kerning:; ">2</span><span style=" font-family:Arial; mso-hansi- mso-font-kerning:; ">根,最下层有</span><span style=" font-family:Arial; mso-font-kerning:; ">12</span><span style=" font-family:Arial; mso-hansi- mso-font-kerning:; ">根,相邻两层相差</span><span style=" font-family:Arial; mso-font-kerning:; ">1</span><span style=" font-family:Arial; mso-hansi- mso-font-kerning:; ">根,这堆钢管一共有(</span><span style=" font-family:Arial; mso-font-kerning:; "> </span><span style=" font-family:Arial; mso-hansi- mso-font-kerning:; ">)根。</span><br><br><span style=" Arial; font-weight:bold; mso-font-kerning:; ">五、选择。(</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">6</span><span style=" Arial; font-weight:bold; mso-font-kerning:; ">分)</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">1</span><span style=" Arial; mso-font-kerning:; ">、</span><span style=" Arial; Arial; mso-font-kerning:; ">1</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">25×2</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">5×0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">8×0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">4=(1</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">25×0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">8)×(2</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">5×0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">4)</span><span style=" Arial; mso-font-kerning:; ">这里运用了(</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">)</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">A、</span><span style=" Arial; mso-font-kerning:; ">乘法交换律</span><span style=" Arial; Arial; mso-font-kerning:; "> B、</span><span style=" Arial; mso-font-kerning:; ">乘法结合律</span><span style=" Arial; Arial; mso-font-kerning:; "> C、</span><span style=" Arial; mso-font-kerning:; ">乘法分配律</span><span style=" Arial; Arial; mso-font-kerning:; "> D、</span><span style=" Arial; mso-font-kerning:; ">乘法交换律和乘法结合律。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">2</span><span style=" Arial; mso-font-kerning:; ">、下列关于小数除法计算方法的叙述中,说法错误的是(</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">)</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">A</span><span style=" Arial; mso-font-kerning:; ">、应用商不变规律可以把除数是小数的除法转化成除数是整数的除法来计算。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">B</span><span style=" Arial; mso-font-kerning:; ">、当除数大于</span><span style=" Arial; Arial; mso-font-kerning:; ">1</span><span style=" Arial; mso-font-kerning:; ">时,商大于被除数;当除数小于</span><span style=" Arial; Arial; mso-font-kerning:; ">1</span><span style=" Arial; mso-font-kerning:; ">时,商小于被除数。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">C</span><span style=" Arial; mso-font-kerning:; ">、一个数连续除以两个小数,等于这个数除以这两个小数的积</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">3</span><span style=" Arial; mso-font-kerning:; ">、哪一道式子的商与</span><span style=" Arial; Arial; mso-font-kerning:; ">3</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">7.</span><span style=" Arial; Arial; mso-font-kerning:; ">8÷0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">16 </span><span style=" Arial; mso-font-kerning:; ">的商相等?( )</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">A</span><span style=" Arial; mso-font-kerning:; ">、</span><span style=" Arial; Arial; mso-font-kerning:; ">378÷1.6 B</span><span style=" Arial; mso-font-kerning:; ">、</span><span style=" Arial; Arial; mso-font-kerning:; ">37</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">8÷1</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">6 C</span><span style=" Arial; mso-font-kerning:; ">、</span><span style=" Arial; Arial; mso-font-kerning:; ">3780÷1</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">6 </span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">4</span><span style=" Arial; mso-font-kerning:; ">、</span><span style=" Arial; Arial; mso-font-kerning:; ">一袋麦片的价钱比一袋饼干的4倍多一些,买20袋饼干的钱能够买几袋麦片?( )</span><span style=" mso-font-kerning:; "> </span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">A</span><span style=" Arial; mso-font-kerning:; ">、</span><span style=" Arial; Arial; mso-font-kerning:; ">最多能买4袋 B</span><span style=" Arial; mso-font-kerning:; ">、</span><span style=" Arial; Arial; mso-font-kerning:; ">刚好能买5袋 C</span><span style=" Arial; mso-font-kerning:; ">、</span><span style=" Arial; Arial; mso-font-kerning:; ">能够买6袋</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">5</span><span style=" Arial; mso-font-kerning:; ">、如果甲</span><span style=" Arial; Arial; mso-font-kerning:; ">×2</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">7=</span><span style=" Arial; mso-font-kerning:; ">乙</span><span style=" Arial; Arial; mso-font-kerning:; ">×3</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">8</span><span style=" Arial; mso-font-kerning:; ">(甲数、乙数不等于</span><span style=" Arial; Arial; mso-font-kerning:; ">0</span><span style=" Arial; mso-font-kerning:; ">),则甲(</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">)乙。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">A</span><span style=" Arial; mso-font-kerning:; ">、大于</span><span style=" Arial; Arial; mso-font-kerning:; "> B</span><span style=" Arial; mso-font-kerning:; ">、小于</span><span style=" Arial; Arial; mso-font-kerning:; "> C</span><span style=" Arial; mso-font-kerning:; ">、等于</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">6</span><span style=" Arial; mso-font-kerning:; ">、从</span><span style=" Arial; Arial; mso-font-kerning:; ">4</span><span style=" Arial; mso-font-kerning:; ">根</span><span style=" Arial; Arial; mso-font-kerning:; ">5</span><span style=" Arial; mso-font-kerning:; ">厘米、</span><span style=" Arial; Arial; mso-font-kerning:; ">4</span><span style=" Arial; mso-font-kerning:; ">根</span><span style=" Arial; Arial; mso-font-kerning:; ">3</span><span style=" Arial; mso-font-kerning:; ">厘米和</span><span style=" Arial; Arial; mso-font-kerning:; ">4</span><span style=" Arial; mso-font-kerning:; ">根</span><span style=" Arial; Arial; mso-font-kerning:; ">1</span><span style=" Arial; mso-font-kerning:; ">厘米长的小棒中,选出若干根,并使它们首尾相接,能够摆出(</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">)种大小不同的正方形。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">A</span><span style=" Arial; mso-font-kerning:; ">、</span><span style=" Arial; Arial; mso-font-kerning:; ">3</span><span style=" Arial; mso-font-kerning:; ">种</span><span style=" Arial; Arial; mso-font-kerning:; "> B</span><span style=" Arial; mso-font-kerning:; ">、</span><span style=" Arial; Arial; mso-font-kerning:; ">6</span><span style=" Arial; mso-font-kerning:; ">种</span><span style=" Arial; Arial; mso-font-kerning:; "> C</span><span style=" Arial; mso-font-kerning:; ">、</span><span style=" Arial; Arial; mso-font-kerning:; ">7</span><span style=" Arial; mso-font-kerning:; ">种</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; font-weight:bold; mso-font-kerning:; ">六、画图。(</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">12</span><span style=" Arial; font-weight:bold; mso-font-kerning:; ">分)</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">1</span><span style=" Arial; mso-font-kerning:; ">、右边的正方形表示</span><span style=" Arial; Arial; mso-font-kerning:; ">1</span><span style=" Arial; mso-font-kerning:; ">平方千米,在这个</span><span style=" Arial; mso-font-kerning:; ">正方形里表示出</span><span style=" Arial; Arial; mso-font-kerning:; ">1</span><span style=" Arial; mso-font-kerning:; ">公顷,并填空。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><img src="//www.szxuexiao.com/uploadimages/2015/0115/2015115104811.png?m=0.6497517002280802"><br><br><span style=" Arial; Arial; mso-font-kerning:; ">1</span><span style=" Arial; mso-font-kerning:; ">平方千米</span><span style=" Arial; Arial; mso-font-kerning:; ">=</span><span style=" Arial; mso-font-kerning:; ">(</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">)公顷</span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">1</span><span style=" Arial; mso-font-kerning:; ">公顷</span><span style=" Arial; Arial; mso-font-kerning:; ">=</span><span style=" Arial; mso-font-kerning:; ">(</span><span style=" Arial; Arial; mso-font-kerning:; "> </span><span style=" Arial; mso-font-kerning:; ">)平方千米</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">2</span><span style=" Arial; mso-font-kerning:; ">、每个小方格表示</span><span style=" Arial; Arial; mso-font-kerning:; ">1</span><span style=" Arial; mso-font-kerning:; ">平方厘米。在方格纸上分别画出面积是</span><span style=" Arial; Arial; mso-font-kerning:; ">12</span><span style=" Arial; mso-font-kerning:; ">平方厘米</span><span style=" Arial; mso-font-kerning:; ">的长方形、平行四边形、三角形和梯形各</span><span style=" Arial; Arial; mso-font-kerning:; ">1</span><span style=" Arial; mso-font-kerning:; ">个。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><img src="//www.szxuexiao.com/uploadimages/2015/0115/201511510492.png?m=0.22902667941525578"><br><br><span style=" Arial; font-weight:bold; mso-font-kerning:; ">七、解决实际问题。(</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">28</span><span style=" Arial; font-weight:bold; mso-font-kerning:; ">分)</span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">1</span><span style=" Arial; mso-font-kerning:; ">、五年级两个班的学生采集树种,五</span><span style=" Arial; Arial; mso-font-kerning:; ">(1)</span><span style=" Arial; mso-font-kerning:; ">班</span><span style=" Arial; Arial; mso-font-kerning:; ">45</span><span style=" Arial; mso-font-kerning:; ">人,每人采集了</span><span style=" Arial; Arial; mso-font-kerning:; ">0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">13</span><span style=" Arial; mso-font-kerning:; ">千克,五</span><span style=" Arial; Arial; mso-font-kerning:; ">(2)</span><span style=" Arial; mso-font-kerning:; ">班</span><span style=" Arial; Arial; mso-font-kerning:; ">36</span><span style=" Arial; mso-font-kerning:; ">人共采集</span><span style=" Arial; Arial; mso-font-kerning:; ">6</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">15</span><span style=" Arial; mso-font-kerning:; ">千克,两个班一共采集树种多少千克?</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">2</span><span style=" Arial; mso-font-kerning:; ">、五(</span><span style=" Arial; Arial; mso-font-kerning:; ">1</span><span style=" Arial; mso-font-kerning:; ">)班</span><span style=" Arial; Arial; mso-font-kerning:; ">48</span><span style=" Arial; mso-font-kerning:; ">位同学到公园去划船,每只小船可以坐</span><span style=" Arial; Arial; mso-font-kerning:; ">3</span><span style=" Arial; mso-font-kerning:; ">人,每只大船可以做</span><span style=" Arial; Arial; mso-font-kerning:; ">5</span><span style=" Arial; mso-font-kerning:; ">人,大船和小船都要坐满。那么,租大、小船有多少种不同的方案?</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">3</span><span style=" Arial; mso-font-kerning:; ">、</span><span style="font-family: 宋体; ">一个机场新建了一条长4千米,宽500米的长方形跑道,这条跑道的占地面积是多少公顷?合多少平方千米?</span><span style="font-family: 宋体; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">4</span><span style=" Arial; mso-font-kerning:; ">、李大爷家有一块菜地。(形状如图,单位米)</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; mso-font-kerning:; ">左边的长方形地里种的是圆白菜,右边的梯形地里</span><span style=" Arial; mso-font-kerning:; ">种的是茄子。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><img src="//www.szxuexiao.com/uploadimages/2015/0115/2015115105010.png?m=0.519265940412879"><br><br><span style=" Arial; mso-font-kerning:; ">(</span><span style=" Arial; Arial; mso-font-kerning:; ">1</span><span style=" Arial; mso-font-kerning:; ">)每棵圆白菜占地</span><span style=" Arial; Arial; mso-font-kerning:; ">0</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">15</span><span style=" Arial; mso-font-kerning:; ">平方米,一共可以种几棵?</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; mso-font-kerning:; ">(</span><span style=" Arial; Arial; mso-font-kerning:; ">2</span><span style=" Arial; mso-font-kerning:; ">)茄子地一共有多少平方米?</span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">5</span><span style=" Arial; mso-font-kerning:; ">、某市出租车的收费标准如下表。</span><div><span style=" Arial; Arial; mso-font-kerning:; "></span><br>
<table width="100%" border="1"><tbody><tr><td><br>行驶里程<br></td><td><br>收 费<br></td></tr><tr><td><br>3千米以内(含3千米)<br></td><td><br>9元<br></td></tr><tr><td><br>3千米以上<br></td><td><br>每1千米1.4元<br></td></tr></tbody></table>
<br><span style=" Arial; mso-font-kerning:; ">(</span><span style=" Arial; Arial; mso-font-kerning:; ">1</span><span style=" Arial; mso-font-kerning:; ">)王叔叔乘出租车行了</span><span style=" Arial; Arial; mso-font-kerning:; ">5</span><span style=" Arial; mso-font-kerning:; ">千米,应付多少元?</span><br><br><span style=" Arial; mso-font-kerning:; ">(</span><span style=" Arial; Arial; mso-font-kerning:; ">2</span><span style=" Arial; mso-font-kerning:; ">)张阿姨从火车站乘出租车回家,付了</span><span style=" Arial; Arial; mso-font-kerning:; ">16</span><span style=" Arial; mso-font-kerning:; ">元。火车站到她家有多少千米?</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">6</span><span style=" Arial; mso-font-kerning:; ">、五年级(</span><span style=" Arial; Arial; mso-font-kerning:; ">1</span><span style=" Arial; mso-font-kerning:; ">)班同学的身高情况分三段统计,结果如下图。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><img src="//www.szxuexiao.com/uploadimages/2015/0115/2015115105118.png?m=0.4932452791836113"><br><br><span style=" Arial; mso-font-kerning:; ">(</span><span style=" Arial; Arial; mso-font-kerning:; ">1</span><span style=" Arial; mso-font-kerning:; ">)根据图中的信息填写下表。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; "><img src="//www.szxuexiao.com/uploadimages/2015/0115/2015115105149.png?m=0.17559759598225355"> </span><br><br><span style=" Arial; mso-font-kerning:; ">(</span><span style=" Arial; Arial; mso-font-kerning:; ">2</span><span style=" Arial; mso-font-kerning:; ">)在合适答案旁的</span><span style=" Arial; Arial; mso-font-kerning:; ">□</span><span style=" Arial; mso-font-kerning:; ">里画</span><span style=" Arial; Arial; mso-font-kerning:; ">“√”</span><span style=" Arial; mso-font-kerning:; ">。</span><br><br><span style=" Arial; mso-font-kerning:; ">全班男生从高到矮排成一行,张林在第</span><span style=" Arial; Arial; mso-font-kerning:; ">5</span><span style=" Arial; mso-font-kerning:; ">个,他的身高大约是多少?</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">1</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">42</span><span style=" Arial; mso-font-kerning:; ">米</span><span style=" Arial; Arial; mso-font-kerning:; ">□ 1</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">52</span><span style=" Arial; mso-font-kerning:; ">米</span><span style=" Arial; Arial; mso-font-kerning:; ">□ 1</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">62</span><span style=" Arial; mso-font-kerning:; ">米</span><span style=" Arial; Arial; mso-font-kerning:; ">□</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; mso-font-kerning:; ">全班女生从矮到高排成一行,陆丽在第</span><span style=" Arial; Arial; mso-font-kerning:; ">16</span><span style=" Arial; mso-font-kerning:; ">个,她的身高大约是多少?</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">1</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">47</span><span style=" Arial; mso-font-kerning:; ">米</span><span style=" Arial; Arial; mso-font-kerning:; ">□ 1</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">57</span><span style=" Arial; mso-font-kerning:; ">米</span><span style=" Arial; Arial; mso-font-kerning:; ">□ 1</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">67</span><span style=" Arial; mso-font-kerning:; ">米</span><span style=" Arial; Arial; mso-font-kerning:; ">□</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">7</span><span style=" Arial; mso-font-kerning:; ">、在一次射击比赛中,某选手第一枪只打中了</span><span style=" Arial; Arial; mso-font-kerning:; ">8</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">9</span><span style=" Arial; mso-font-kerning:; ">环,但是他及时调整心态,后面</span><span style=" Arial; Arial; mso-font-kerning:; ">9枪发挥很好,结果使最后的平均成绩达到了9</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">8环。他后面9枪平均每枪打中了多少环?</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><br><div style="text-align: center;"><font color="#38761d">第二部分</font></div><br><div style="text-align: center;">第九单元:整理与复习(一)多边形的面积</div><br><span style=" z-index:1; left:0px; "></span><span style="font-family: 宋体; ">1、复习本知识需要掌握的概念与计算公式:(重点记住知识树)</span><span style="font-family: 宋体; "></span><br><br><span style="font-family: 宋体; "><o:p><img src="//www.szxuexiao.com/uploadimages/2015/0115/2015115105258.jpg?m=0.8578307968564332"> </o:p></span><br><span style="font-family: 宋体; font-weight: bold; ">复习本部分需要掌握课本上的基本题与重点题目。</span><span style="font-family: 宋体; font-weight: bold; "></span><br><br><span style="font-family: 宋体; ">(1)浏览课本上的例题“试一试”与“练一练”。</span><span style="font-family: 宋体; "></span><br><br><span style="font-family: 宋体; ">如:课本第8页“试一试”与“练一练”;</span><span style="font-family: 宋体; "></span><br><br><span style="font-family: 宋体; ">课本第10页的“试一试”与“练一练”第1、2题;</span><span style="font-family: 宋体; "></span><br><br><span style="font-family: 宋体; ">课本第15页“试一试”与“练一练”;</span><span style="font-family: 宋体; "></span><br><br><span style="font-family: 宋体; ">课本第16页的“练一练”;</span><br><br><span style="font-family: 宋体; ">(2)浏览课本上与“试一试”、“练一练”类同的一般基础题。</span><span style="font-family: 宋体; "></span><br><br><span style="font-family: 宋体; ">如:课本第11~13页中的:第1题到第5题,第7、8、9、11、12题,第13、14、16、17题;第18~20页中的:除了第4题的全部题目。</span><span style="font-family: 宋体; "></span><br><br><span style="font-family: 宋体; ">(3)浏览课本第102页例题6与“练一练”第3、4题,第104页上的第9题,第106页上的第4题,第107页上的第9、11题。</span><span style="font-family: 宋体; "></span><br><br><span style="font-family: 宋体; ">(4)重点复习组合面积的计算。解答组合图形面积的方法是:</span></div><div><span style="font-family: 宋体; "><br></span></div><div><span style="font-family: 宋体; ">(1)学会合理分割法解答,</span></div><div><span style="font-family: 宋体; "><br></span></div><div><span style="font-family: 宋体; ">(2)学会用平移、旋转、割补方法解答。</span><span style="font-family: 宋体; "></span><br><br><span style="font-family: 宋体; ">重点复习的应用题是:</span><br><br><span style="font-family: 宋体; ">①课本第23、24页上的全部题目,重点的重点题是第2、第6、第7题;</span></div><div><span style="font-family: 宋体; "><br></span></div><div><span style="font-family: 宋体; ">②课本第26、27页上的全部题目,重点的重点题是第5、7、9、10题;</span><span style="font-family: 宋体; "></span><br><br><span style="font-family: 宋体; ">③课本第67页上的第6题,第76页上的例题14,</span><span style="font-family: 宋体; "></span><br><br><span style="font-family: 宋体; ">④课本第112页上第16~19题。重点的重点题是第16、17、18、19题。</span><span style="font-family: 宋体; "></span><br><br><br><div style="text-align: center;"><span style="font-family: 宋体;">同步奥数提高题</span><span style="font-family: 宋体; ">(家作题)</span></div><br><span style="font-family: 宋体; ">1、一个梯形的上底是11厘米。如果上底增加5厘米。下底减少7厘米,那么就变成一个面积是120平方厘米的长方形。求原来的梯形面积。</span><br><br><span style="font-family: 宋体; font-weight: bold; ">2</span><span style="font-family: 宋体; ">、一个高速公路的路基长360千米,宽60米。这条高速公路占地多少公顷?合多少平方千米?</span><span style="font-family: 宋体; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">3</span><span style=" Arial; mso-font-kerning:; ">、计算下边图形的阴影面积。(单位:分米)</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><img src="//www.szxuexiao.com/uploadimages/2015/0115/2015115105619.png?m=0.7591052916832268"><br><br><span style=" z-index:1; left:0px; "></span><span style=" Arial; Arial; mso-font-kerning:; ">4</span><span style=" Arial; mso-font-kerning:; ">、图中三角形</span><span style=" Arial; Arial; mso-font-kerning:; ">ABC</span><span style=" Arial; mso-font-kerning:; ">的面积是</span><span style=" Arial; Arial; mso-font-kerning:; ">40</span><span style=" Arial; mso-font-kerning:; ">平方厘米,</span><span style=" Arial; Arial; mso-font-kerning:; ">AC</span><span style=" Arial; mso-font-kerning:; ">长</span><span style=" Arial; Arial; mso-font-kerning:; ">8</span><span style=" Arial; mso-font-kerning:; ">厘米,</span><span style=" Arial; Arial; mso-font-kerning:; ">DE</span><span style=" Arial; mso-font-kerning:; ">长</span><span style=" Arial; Arial; mso-font-kerning:; ">4</span><span style=" Arial; mso-font-kerning:; ">厘米,求阴影部分的面积(</span><span style=" Arial; Arial; mso-font-kerning:; ">ADFC</span><span style=" Arial; mso-font-kerning:; ">不是正方形)。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><img src="//www.szxuexiao.com/uploadimages/2015/0115/2015115105723.png?m=0.48944036522880197"><br><br><span style=" Arial; Arial; mso-font-kerning:; ">5</span><span style=" Arial; mso-font-kerning:; ">、如右图,长方形被分成了一个三角</span><span style=" Arial; mso-font-kerning:; ">形和一个梯形。已知梯形面积是三角形面</span><span style=" Arial; mso-font-kerning:; ">积的</span><span style=" Arial; Arial; mso-font-kerning:; ">2</span><span style=" Arial; mso-font-kerning:; ">倍,求三角形与梯形的面积。</span><span style=" Arial; mso-font-kerning:; "></span><br><br><img src="//www.szxuexiao.com/uploadimages/2015/0115/2015115105817.png?m=0.02383648557588458"><br><span style=" Arial; Arial; mso-font-kerning:; "><o:p> </o:p></span><br><br><div style="text-align: center;"><font color="#38761d">第三部分</font></div><br><div style="text-align: center;"><span style="font-weight: bold;">家作题的详细分析与答案</span></div><br><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">家作题的详细分析:</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">同步奥数提高题</span><span style=" Arial; Arial; mso-font-kerning:; ">(家作题)</span><br><br><span style="font-family: 宋体; ">1、一个梯形的上底是11厘米。如果上底增加5厘米。下底减少7厘米,那么就变成一个面积是120平方厘米的长方形。求原来的梯形面积。</span><span style="font-family: 宋体; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; "><font color="#ff0000">分析:根据题中信息,我们可以先画示意图来帮助分析与理解。</font></span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" z-index:1; left:0px; "></span><span style=" Arial; Arial; mso-font-kerning:; "><img src="//www.szxuexiao.com/uploadimages/2015/0115/2015115105917.png?m=0.3521685325540602"></span><br><br><font color="#ff0000"><span style=" Arial; Arial; mso-font-kerning:; ">从示意图可知,原来梯形上底增加5厘米、下底减少7厘米后,变成一个长是16厘米,面积是120平方厘米的长方形。为此,我们可以先求这个长方形的宽,也就是原来这个梯形的高。原来梯形的下底是11</span><span style=" font-family:Arial; mso-font-kerning:; ">+</span><span style=" Arial; Arial; Arial; mso-font-kerning:; ">5+7=23厘米。懂得这些知识点以后,最后我们运用梯形面积计算公式,就可以解决最后的实际问题。具体解答在后面。</span></font><br><br><span style="font-family: 宋体; font-weight: bold; ">2</span><span style="font-family: 宋体; ">、一个高速公路的路基长360千米,宽60米。这条高速公路占地多少公顷?合多少平方千米?</span><span style="font-family: 宋体; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; "><font color="#ff0000">分析:根据题中信息,要求这条高速公路占地多少公顷?必须先求这块地有多少平方米。要求这块地有多少平方米?就是求长方形的面积。在求长方形的面积时,必须注意统一长度单位,先将360千米改写成360000米。计算出面积是多少平方米后,再换算成公顷数和平方千米数。具体解答在后面。</font></span><br><br><span style=" z-index:1; left:0px; "></span><span style=" Arial; Arial; mso-font-kerning:; ">3</span><span style=" Arial; mso-font-kerning:; ">、计算下边图形的阴影面积。(单位:分米)</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><img src="//www.szxuexiao.com/uploadimages/2015/0115/201511511028.png?m=0.011589057045057416"><br><br><span style=" mso-font-kerning:; "><font color="#ff0000">分析:根据题中信息,要求这个组合图形的面积,我们必须运用求组合图形面积的方法。首先进行合理的分割。把这个由边长大小不同的两个正方形拼成的组合图形,按照空白部分与阴影部分来分,可以分割成空白部分的两个三角形与一个阴影部分。如图:</font></span><span style=" mso-font-kerning:; "></span><br><br><img src="//www.szxuexiao.com/uploadimages/2015/0115/201511511155.png?m=0.5163878169842064"><br><br><span style=" mso-font-kerning:; ">从图上可以看出,通过合理分割,我们应该知道,求阴影部分的面积,只要用两个大小不同的正方形面积之和减去两个空白部分的三角形面积就可以解决本题的实际问题。具体解答在后面。</span><span style=" mso-font-kerning:; "></span><br><br><span style=" z-index:1; left:0px; "></span><span style=" Arial; Arial; mso-font-kerning:; ">4</span><span style=" Arial; mso-font-kerning:; ">、图中三角形</span><span style=" Arial; Arial; mso-font-kerning:; ">ABC</span><span style=" Arial; mso-font-kerning:; ">的面积是</span><span style=" Arial; Arial; mso-font-kerning:; ">40</span><span style=" Arial; mso-font-kerning:; ">平方厘米,</span><span style=" Arial; Arial; mso-font-kerning:; ">AC</span><span style=" Arial; mso-font-kerning:; ">长</span><span style=" Arial; Arial; mso-font-kerning:; ">8</span><span style=" Arial; mso-font-kerning:; ">厘米,</span><span style=" Arial; Arial; mso-font-kerning:; ">DE</span><span style=" Arial; mso-font-kerning:; ">长</span><span style=" Arial; Arial; mso-font-kerning:; ">4</span><span style=" Arial; mso-font-kerning:; ">厘米,求阴影部分的面积(</span><span style=" Arial; Arial; mso-font-kerning:; ">ADFC</span><span style=" Arial; mso-font-kerning:; ">不是正方形)。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><img src="//www.szxuexiao.com/uploadimages/2015/0115/201511511241.png?m=0.8354300730861723"><br><br><font color="#ff0000"><span style=" Arial; mso-font-kerning:; ">分析:根据题中信息,要求阴影部分的面积,就是求梯形的面积,这个梯形的上底</span><span style=" Arial; Arial; mso-font-kerning:; ">DE</span><span style=" Arial; mso-font-kerning:; ">长</span><span style=" Arial; Arial; mso-font-kerning:; ">4</span><span style=" Arial; mso-font-kerning:; ">厘米,高</span><span style=" Arial; Arial; mso-font-kerning:; ">DF</span><span style=" Arial; mso-font-kerning:; ">等于</span><span style=" Arial; Arial; mso-font-kerning:; ">AC</span><span style=" Arial; mso-font-kerning:; ">,长</span><span style=" Arial; Arial; mso-font-kerning:; ">8</span><span style=" Arial; mso-font-kerning:; ">厘米。</span><span style=" Arial; Arial; mso-font-kerning:; ">DF</span><span style=" Arial; mso-font-kerning:; ">既是梯形的高,也与三角形</span><span style=" Arial; Arial; mso-font-kerning:; ">ABC</span><span style=" Arial; mso-font-kerning:; ">的底</span><span style=" Arial; Arial; mso-font-kerning:; ">AC</span><span style=" Arial; mso-font-kerning:; ">的长相等。现在就是梯形的下底不知道,梯形的下底的长度,从图上可以看出,它与三角形</span><span style=" Arial; Arial; mso-font-kerning:; ">ABC</span><span style=" Arial; mso-font-kerning:; ">的高相等。为此我们必须从三角形</span><span style=" Arial; Arial; mso-font-kerning:; ">ABC</span><span style=" Arial; mso-font-kerning:; ">的面积是</span><span style=" Arial; Arial; mso-font-kerning:; ">40</span><span style=" Arial; mso-font-kerning:; ">平方厘米入手,求出三角形</span><span style=" Arial; Arial; mso-font-kerning:; ">ABC</span><span style=" Arial; mso-font-kerning:; ">的高。求三角形高的方法是:用</span><span style=" Arial; Arial; mso-font-kerning:; ">“</span><span style=" Arial; mso-font-kerning:; ">三角形的面积</span><span style=" font-family:Arial; mso-font-kerning:; ">×</span><span style=" Arial; Arial; mso-font-kerning:; ">2</span><span style=" font-family:Arial; mso-font-kerning:; ">÷</span><span style=" Arial; mso-font-kerning:; ">底</span><span style=" Arial; Arial; mso-font-kerning:; ">=</span><span style=" Arial; mso-font-kerning:; ">高</span><span style=" Arial; Arial; mso-font-kerning:; ">”</span><span style=" Arial; mso-font-kerning:; ">去求。具体解答在后面。</span></font><span style=" Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">5</span><span style=" Arial; mso-font-kerning:; ">、如右图,长方形被分成了一个三角</span><span style=" Arial; mso-font-kerning:; ">形和一个梯形。已知梯形面积是三角形面</span><span style=" Arial; mso-font-kerning:; ">积的</span><span style=" Arial; Arial; mso-font-kerning:; ">2</span><span style=" Arial; mso-font-kerning:; ">倍,求三角形与梯形的面积。</span><span style=" Arial; mso-font-kerning:; "></span><br><br><img src="//www.szxuexiao.com/uploadimages/2015/0115/201511511342.png?m=0.031188900815322995"><br><br><font color="#ff0000"><span style=" Arial; Arial; mso-font-kerning:; ">分析:根据题中信息,要求三角形与梯形的面积,我们必须先求长方形的面积,用3</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">2×2</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">4</span><span style=" Arial; mso-font-kerning:; ">,得</span><span style=" Arial; Arial; mso-font-kerning:; ">7</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">68</span><span style=" Arial; mso-font-kerning:; ">平方米,这个</span><span style=" Arial; Arial; mso-font-kerning:; ">7</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">68</span><span style=" Arial; mso-font-kerning:; ">平方米,就是三角形与梯形面积之和。再根据</span><span style=" Arial; Arial; mso-font-kerning:; ">“梯形面积是三角形面积的2倍,”这个信息,我们可知,本题属于和倍应用题的特征。其中三角形的面积是一倍数,梯形面积是这样的2倍数,长方形的面积就是这样的3倍数。为此,我们应该用和倍应用题的解答方法,去求三角形与梯形各自的面积。和倍应用题的解答方法是:和÷(倍数—1)=较小数,较小数×倍数=较大数,或,和—较小数=较大数。具体解答在后面。</span></font><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><br><div style="text-align: center;"><span style="font-weight: bold;"><font color="#38761d">家作题的详细解答与检验过程</font></span></div><br><span style="font-family: 宋体; ">家作第1题的详细答案。</span><span style="font-family: Arial; color: rgb(255, 0, 0); background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">长方形的宽是多少厘米?</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">120</span><span style=" font-family:Arial; mso-font-kerning:; ">÷</span><span style=" Arial; Arial; Arial; mso-font-kerning:; ">(11+5)=7</span><span style=" Arial; Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; Arial; mso-font-kerning:; ">5(厘米)</span><span style=" Arial; Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; Arial; mso-font-kerning:; ">梯形的下底是多少厘米?</span><span style=" Arial; Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; Arial; mso-font-kerning:; ">11+5+7=23(厘米)</span><span style=" Arial; Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; Arial; mso-font-kerning:; ">原来梯形的面积。</span><span style=" Arial; Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; Arial; mso-font-kerning:; ">(23+11)</span><span style=" font-family:Arial; mso-font-kerning:; ">×</span><span style=" Arial; Arial; Arial; mso-font-kerning:; ">7</span><span style=" Arial; Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; Arial; mso-font-kerning:; ">5</span><span style=" font-family:Arial; mso-font-kerning:; ">÷</span><span style=" Arial; Arial; Arial; mso-font-kerning:; ">2</span><span style=" Arial; Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; Arial; mso-font-kerning:; "> =34</span><span style=" font-family:Arial; mso-font-kerning:; ">×</span><span style=" Arial; Arial; Arial; mso-font-kerning:; ">7</span><span style=" Arial; Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; Arial; mso-font-kerning:; ">5</span><span style=" font-family:Arial; mso-font-kerning:; ">÷</span><span style=" Arial; Arial; Arial; mso-font-kerning:; ">2</span><span style=" Arial; Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; Arial; mso-font-kerning:; "> =127</span><span style=" Arial; Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; Arial; mso-font-kerning:; ">5(平方厘米)</span><span style=" Arial; Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; Arial; mso-font-kerning:; ">答:原来梯形的面积是127</span><span style=" Arial; Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; Arial; mso-font-kerning:; ">5平方厘米。</span><span style=" Arial; Arial; Arial; mso-font-kerning:; "></span><br><br><br><span style=" Arial; Arial; mso-font-kerning:; ">家作第2题的详细答案。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">360千米=360000米</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">长方形的面积。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">360000</span><span style=" font-family:Arial; mso-font-kerning:; ">×</span><span style=" Arial; Arial; Arial; mso-font-kerning:; ">60=21600000(平方米)</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; Arial; mso-font-kerning:; ">21600000平方米=2160公顷</span><span style=" Arial; Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; Arial; mso-font-kerning:; ">21600000平方米=21</span><span style=" Arial; Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; Arial; mso-font-kerning:; ">6平方千米</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">答:这条高速公路占地2160公顷,合21</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">6平方千米。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><br><span style=" Arial; Arial; mso-font-kerning:; ">家作第3题的详细答案。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">两个大小不同的正方形面积之和。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">12×12+8×8</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">=144+64</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">=208(平方分米)</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">两个空白部分的三角形面积之和。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">12×12÷2+(12+8)×8÷2</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">=72+80</span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">=152(平方分米)</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">阴影部分面积。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">208—152=56(平方分米)</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">答:阴影部分面积是56平方分米。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><br><span style=" Arial; Arial; mso-font-kerning:; ">家作第4题的详细答案。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">三角形的高:40</span><span style=" font-family:Arial; mso-font-kerning:; ">×</span><span style=" Arial; Arial; Arial; mso-font-kerning:; ">2</span><span style=" font-family:Arial; mso-font-kerning:; ">÷</span><span style=" Arial; Arial; Arial; mso-font-kerning:; ">8=10(厘米)</span><span style=" Arial; Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; Arial; mso-font-kerning:; ">阴影部分的面积:(4+10)</span><span style=" font-family:Arial; mso-font-kerning:; ">×</span><span style=" Arial; Arial; Arial; mso-font-kerning:; ">8</span><span style=" font-family:Arial; mso-font-kerning:; ">÷</span><span style=" Arial; Arial; Arial; mso-font-kerning:; ">2=56(平方厘米)</span><span style=" Arial; Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">答:阴影部分的面积是56平方厘米。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><br><span style=" Arial; Arial; mso-font-kerning:; ">家作第5题的详细答案。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">长方形的面积。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">3</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">2×2</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">4=7</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">68(平方米)</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">三角形的面积。</span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">7</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">68÷(2+1)=2</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">56(平方米)</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">梯形的面积。</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">2</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">56×2=5</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">12(平方米) 或用7</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">68—2</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">56=5</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">12(平方米)</span><span style=" Arial; Arial; mso-font-kerning:; "></span><br><br><span style=" Arial; Arial; mso-font-kerning:; ">答:三角形的面积是2</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">56平方米,梯形的面积是5</span><span style=" Arial; Arial; font-weight:bold; mso-font-kerning:; ">.</span><span style=" Arial; Arial; mso-font-kerning:; ">12平方米</span><span style=" Arial; mso-font-kerning:; ">。</span><span style=" mso-font-kerning:; "></span><br><br></div>
五年级上