2011-2012学年人教版小学四年级数学上学期第7-9单元试卷

<div><strong>一、填空(28分)</strong></div><div><br></div><div>1.根据加法、乘法运算定律,先在□里填上合适的数,再填空。</div><div><br></div><div>①49+□=73+49 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ⑤(74+39)+61=74+(□+61)</div><div><br></div><div>②37×28=□×37 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ⑥25×(4×18)=(□×4)×18</div><div><br></div><div>③□+136=□+55 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;⑦167+256+333=256+(□+333)</div><div><br></div><div>④61×□=44×□ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ⑧15×12×6=12×(□×□)</div><div><br></div><div>上面8道题中,( &nbsp; &nbsp; &nbsp; &nbsp;)只运用了加法交换律,( &nbsp; &nbsp; &nbsp; &nbsp; )只运用了加法结合律,( &nbsp; &nbsp; &nbsp;)只运用了乘法交换律,( &nbsp; &nbsp; &nbsp; &nbsp; )只运用了乘法结合律,( &nbsp; &nbsp; &nbsp; )既应用了加法交换律又应用了加法结合律,( &nbsp; &nbsp; &nbsp; &nbsp;)既应用了乘法交换律又应用了乘法结合律。</div><div><br></div><div>2.口袋里有5块红色橡皮,3块黄色橡皮,橡皮的形状、大小相同,从中任意摸一块橡皮,摸(   )橡皮的可能性大,如果想使两种颜色的橡皮摸到的可能性相等,需要再往袋中放入(     )橡皮;如果想使摸到黄色橡皮的可能性大,至少要往袋中放入(    )橡皮(   )块。</div><div><br></div><div>3.张阿姨第一天3小时制作零件90个,照这样计算,第二天5小时制作零件150个。填表:</div><div><br></div><div>第一天<span class="Apple-tab-span" style="white-space:pre"> </span>( &nbsp; &nbsp;)小时<span class="Apple-tab-span" style="white-space:pre"> </span>( &nbsp; &nbsp; )个</div><div><br></div><div>第二天<span class="Apple-tab-span" style="white-space:pre"> </span>( &nbsp; &nbsp;)小时<span class="Apple-tab-span" style="white-space:pre"> </span>( &nbsp; &nbsp; )个</div><div><br></div><div>张阿姨平均每小时制作零件( &nbsp; &nbsp; )个,要制作零件120个,需要( &nbsp; )小时。</div><div><br></div><div>4.买3盒巧克力用去12元。12÷3表示( &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;); 12÷3×5表示( &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; )。</div><div><br></div><div>5.用3辆汽车2次可运货30吨。30÷3÷2表示( &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; )</div><div><br></div><div>6.在下面几句话中的括号里填上“一定”、“可能”或“不可能”:</div><div><br></div><div>⑴1000( &nbsp; &nbsp; )比999大。 &nbsp; &nbsp;⑵小亮的年龄( &nbsp; &nbsp; &nbsp;)比小芳小。</div><div><br></div><div>⑶1小时( &nbsp; &nbsp; &nbsp;)比40分钟短。 &nbsp;⑷袋子里有4个红球,5个白球,任意摸一个,摸到的( &nbsp; &nbsp; &nbsp;)是红球,也( &nbsp; &nbsp;)是白球,( &nbsp; &nbsp; &nbsp;)摸到黄球。</div><div><br></div><div><br></div><div><br></div><div><strong>点击此处下载:</strong><a href="//www.szxuexiao.com/down.asp?fileurl=201112_826815_798413161" target="_blank">2011-2012学年人教版小学四年级数学上学期第7-9单元试卷</a><br></div><div><br></div>