2014-2015学年苏教版小学五年级数学上册第三单元测试题

<div style="text-align: center;"><strong><font color="#ff0000">2014-2015学年苏教版小学五年级数学上册第三单元测试卷</font></strong></div><div><br></div><br><span style=" letter-spacing:-; font-weight:bold; ">一、填空(52分)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style=" letter-spacing:-; font-weight:bold; "></span><br><br><span style=" letter-spacing:-; ">1、在下面的括号里填上合适的小数。</span><span style=" letter-spacing:-; "></span><br><br><span style=" letter-spacing:-; ">5元3分=( &nbsp;&nbsp; )元 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6克=(    )千克 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25公顷=(  &nbsp; )平方千米  </span><span style=" letter-spacing:-; "></span><br><br><span style=" letter-spacing:-; ">6米5厘米 =( &nbsp;&nbsp; )米&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span>9米=(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)千米&nbsp;</span><br><br><span style=" letter-spacing:-; ">2、7个百、</span><span style=" letter-spacing:-; ">5</span><span style=" letter-spacing:-; ">个十分之一和7个千分之一组成的数是(       ),这个数读作(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;),精确到个位是(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)。</span><span style=" letter-spacing:-; "></span><br><br><span style=" letter-spacing:-; ">3、一个数的整数部分是最小的素数,小数点右边第一位是最小的合数,千分位上是最大的一位数,其余各位上是0,这个数是(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)。</span><span style=" letter-spacing:-; "></span><br><br><span style=" letter-spacing:-; ">4、&nbsp;马小虎在读一个小数时,没看到小数点,结果读成了七万零七。原来的小数要读两个“零”,原来的小数是(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)。</span><br><br><span style=" letter-spacing:-; ">5、 一个数的百位上是5,百分位上是5,其他各个数位上都是</span><span style=" letter-spacing:-; ">0</span><span style=" letter-spacing:-; ">,这个数写作(  &nbsp; ),读作(           )。</span><span style=" letter-spacing:-; "></span><br><br><span>6、在数位顺序表上,小数部分的最高位是(&nbsp;&nbsp;&nbsp;)位,整数部分的最低位是(&nbsp;&nbsp;&nbsp;)位,它们之间的进率是(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)。</span><br><br><span>7、甲、乙、丙、丁四人进行50米赛跑,成绩如下:甲9.27秒,乙8.43秒,丙9.09秒,丁8.54秒;那么获得冠军的是(&nbsp;&nbsp;&nbsp;&nbsp;)。</span><br><br><span>8、大于0.4而小于0.9的小数有(&nbsp;&nbsp;&nbsp;)个&nbsp;,大于3.7而小于3.8的两位小数有(&nbsp;&nbsp;&nbsp;)个。</span><br><br><span>9、把9改写成以“千分之一”为计数单位的数是(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;);把7.2改写成计数单位是0.01的数是(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)。</span><br><br><span>10、把10.050化简是(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;),</span><span>&nbsp;把它保留一位小数是(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)</span><span>;</span><br><br><span>11、1.75的计数单位是( &nbsp; &nbsp;),它有( &nbsp; &nbsp;)个这样的计数单位,再添上(&nbsp;&nbsp;&nbsp;</span><span>)</span><span>个这样的计数单位就是最小的素数。</span><br><br><span>12、你能在括号里填上合适的小数吗?</span><br><br><img src="//www.szxuexiao.com/uploadimages/2014/1029/20141029172255.jpg?m=0.6095413689035922"><br><br><span>13、潜水艇在水下30米处记作-30米。如果它上浮5米,这时它的位置可记作(&nbsp;&nbsp;&nbsp;&nbsp;)米;之后又下沉8米,这时它的位置可记作(&nbsp;&nbsp;&nbsp;&nbsp;)米。</span><br><br><span>14、把</span><span>14698400</span><span>改成写用“万”作单位的数是(&nbsp; &nbsp;&nbsp;),保留整数是( &nbsp;  )。</span><br><br><span>15、9</span><span>□</span><span>642</span><span>≈</span><span>10万</span><span>□</span><span>可以填(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)7</span><span>□</span><span>9345670</span><span>≈</span><span>7亿</span><span>□</span><span>可以填(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)。</span><br><br><span>16、9.9549保留一位小数是(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;),精确到百分位是(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)。</span><br><br><span>17、一个三位小数,四舍五入后是5.74,这个小数最大是(&nbsp;&nbsp;&nbsp;&nbsp;),最小是(&nbsp;&nbsp;&nbsp;&nbsp;)。</span><br><br><span>18、求下面小数的近似值。</span><br><br><span>8.978≈(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)(精确到十分位)&nbsp;34.363≈(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)(精确到百分位)</span><br><br><span>6.0576≈(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)(保留三位小数)&nbsp;34.495≈(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)(保留整数部分)</span><br><br><span>19、</span><span>将各数先按要求改写成用“万”或“亿”作单位的数,再写出它们的近似数。(保留两位小数)</span><br><br><span>565170=(  &nbsp;)万≈(   )万</span><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span>7447</span><span>44</span><span>0=(  &nbsp;)万≈(</span><span>&nbsp;</span><span> &nbsp;)万</span><br><br><span>6873090000=(  &nbsp;)亿≈( &nbsp;)亿</span><span>&nbsp;&nbsp;&nbsp;</span><span>12</span><span>0</span><span>3000=(  </span><span>&nbsp;&nbsp;</span><span>&nbsp;)亿≈( &nbsp;</span><span>&nbsp;</span><span>)亿</span><br><br><span>20、</span><span>地球赤道一周长约</span><span style=" text-decoration:underline ; ">40057500</span><span>米,改写成以“万米”为单位的数是(  &nbsp;)万米,如果精确到十分位约是(   &nbsp;)万米。</span><br><br><span>21</span><span>、</span><span>世界上最大的恐龙是震龙,也叫地震龙</span><span>。</span><span>它的体重达到</span><span style=" text-decoration:underline ; ">130000</span><span>千克,改写成以“亿”作单位的数是(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)千克。</span><br><br><span>22</span><span>、</span><span>0.00092</span><span>亿吨写成用“</span><span>万</span><span>吨”为单位的数是(   </span><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span>  &nbsp;)</span><span>万</span><span>吨。</span><br><br><span>23、</span><span>在下面的□里填数。</span><div><span><br></span></div><div><span>(1)</span><span>0.9□≈1.0,□里可以填的数字是</span><span>(&nbsp;&nbsp;</span><span>    </span><span>&nbsp;&nbsp;</span><span> </span><span>)。</span><br><br><span>(2)</span><span>2.83□≈2.83,□里可以填的数字是</span><span>(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)。</span><br><br><span>24、一个三位小数用“四舍五入”的取近似值是20.00,这个数最大是(&nbsp;&nbsp;&nbsp;&nbsp;),最小是(&nbsp;&nbsp;&nbsp;&nbsp;)。</span><br><br><span>25、王强参加飞行员体检时,量的身高是1.748米,体重是65.25千克。他的身高精确百分位是(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)米,体重精确到个位是(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)千克。</span><br><br><span>26、同学们参加赛跑,小敏每秒跑5.2米,小红跑48米要10秒,小花16秒跑80米,则(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)跑得最快,(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)跑得最慢。</span><br><br><span style=" letter-spacing:-; font-weight:bold; ">二、选择(12分)</span><span style=" letter-spacing:-; font-weight:bold; "></span><br><br><span style=" letter-spacing:-; ">1、在下面的四个数中,能化简的是(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)。</span><br><br><span style=" letter-spacing:-; ">A、5.02    B、300    C、0.007    D、0.060</span><span style=" letter-spacing:-; "></span><br><br><span style=" letter-spacing:-; ">2、5.463中的“6”表示(&nbsp;&nbsp;&nbsp;&nbsp;)。</span><span style=" letter-spacing:-; "></span><br><br><span style=" letter-spacing:-; ">A、6个1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B、6个0.01 &nbsp; &nbsp; &nbsp; &nbsp;C、6个十分之一&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D、6个千分之一</span><span style=" letter-spacing:-; "></span><br><br><span>3、10个百分之一和(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)个千分之一相等。</span><br><br><span>A.&nbsp;1000&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.100&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.10&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.1</span><br><br><span>4、下面各组数中,数值相等而计数单位不同的是(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)。</span><br><br><span>A.0.090和0.009&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.&nbsp;0.009和0.09&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.0.090和0.09</span><br><br><span>5、</span><span>十分之一、百分之一</span><span>..&nbsp;...</span><span>都是</span><span>(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;),个位、</span><span>十位、百位</span><span>、....</span><span>都是</span><span>(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)。</span><br><br><span>A、</span><span>计数单位&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span>B、</span><span>数位&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span>C、</span><span>位数</span><br><br><span>6、下面说法</span><span style=" font-weight:bold; ">错误</span><span>的是(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)。</span><br><br><span>A.&nbsp;整数部分的最低位是个位,小数部分的最高位是十分位。</span><br><br><span>B.&nbsp;在一个数的末尾添上或去掉“0”,这个数的大小不变。</span><br><br><span>C.&nbsp;大于0.5而小于0.9的一位小数只有0.6、0.7、0.8三个。</span><br><br><span>D.整数不一定比小数大。</span><br><br><span>7、两个小数,如果甲数比乙数大,那么甲数的计数单位一定比乙数(&nbsp;&nbsp;&nbsp;&nbsp;)。</span><br><br><span>A、大&nbsp;&nbsp;&nbsp;&nbsp;B、&nbsp;小&nbsp;&nbsp;&nbsp;&nbsp;C、无法确定</span><br><br><span style=" letter-spacing:-; ">8、0.19万改写成以“&nbsp;1”作单位的数是(    )。</span><span style=" letter-spacing:-; "></span><br><br><span style=" letter-spacing:-; ">A 190      B 19000     C 0.0019   &nbsp;D 1900</span><span style=" letter-spacing:-; "></span><br><br><span style=" letter-spacing:-; ">9、下列各小数中,(   )的百分位“五入”是5.0。</span><span style=" letter-spacing:-; "></span><br><br><span style=" letter-spacing:-; ">A 4.95      B 5.06      C 4.89    D 5.96</span><span style=" letter-spacing:-; "></span><br><br><span style=" letter-spacing:-; ">10、一个两位小数精确到十分位是6.0,这个数最小是(   )。</span><span style=" letter-spacing:-; "></span><br><br><span style=" letter-spacing:-; ">A 5.99    &nbsp; B 6.1       C 5.94  &nbsp; &nbsp;D 5.95</span><span style=" letter-spacing:-; "></span><br><br><span>11、想一想,2.□4&nbsp;>2.46,□里有(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)种填法。</span><br><br><span>A&nbsp;&nbsp;&nbsp;3&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B&nbsp;&nbsp;4&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C&nbsp;&nbsp;&nbsp;5&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D&nbsp;&nbsp;&nbsp;6</span><br><br><span>12、李丽在一次跳远比赛中成绩是第三名,下面是小组四名同学的成绩,李丽的成绩是(&nbsp;&nbsp;&nbsp;)。</span></div><div><span><br></span></div><div><span>A&nbsp;&nbsp;2.04米</span><span>  &nbsp;</span><span>B</span><span>&nbsp;</span><span>&nbsp;2.12米</span><span>  &nbsp;</span><span>C</span><span>&nbsp;</span><span>&nbsp;1.98米&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D&nbsp;2.21米</span><br><br><span style=" letter-spacing:-; font-weight:bold; ">三、判断(12分)</span><span style=" letter-spacing:-; font-weight:bold; "></span><br><br><span>1、小数部分的最高位是十分位,而整数部分则没有最高位,。 (&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)           &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  </span><br><br><span>2、10个十分之一是1个百分之一。(&nbsp;&nbsp;&nbsp;&nbsp;)</span><br><br><span>3、0.7千克的棉花比700克的铁块一样重。(&nbsp;&nbsp;&nbsp;&nbsp;)</span><br><br><span>4、小数位数越多,这个小数就越大。(&nbsp;&nbsp;&nbsp;&nbsp;)</span><br><br><span>5、0.8与0.800的大小相同,意义也相同。(&nbsp;&nbsp;&nbsp;&nbsp;)</span><br><br><span>6、把一个两位小数精确到十分位是3.5,这个两位小数最大是3.54。(&nbsp;&nbsp;&nbsp;&nbsp;)            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; </span><br><br><span>7、要把一个数扩大100倍,只要在这个数的末尾添上两个“0”。 (&nbsp;&nbsp;&nbsp;&nbsp;)</span><br><br><span style=" letter-spacing:-; ">8、小数位数越多,这个小数就越大。(   )</span><br><br><span style=" letter-spacing:-; ">9、在小数点后面添上或去掉“0”,小数的大小不变。 (   )</span><br><br><span>10、</span><span>大于0.35而小于0.36的小数有无数个。</span><span>(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)</span><br><br><span>11、因为0.9=0.900,所以近似数0.900可以写成0.9。(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)</span><br><br><span>12、小数不一定比整数小。(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)</span><br><br><span style=" font-weight:bold; ">四、解决问题(24分)</span><span style=" font-weight:bold; "></span><br><br><span>1、把下面的小数按从小到大的顺序排列起来。</span><br><br><span style=" letter-spacing:-; ">0.503   0.5    0.53   0.053     0.305    0.035</span><span style=" letter-spacing:-; "></span><br><br><span style=" text-decoration:underline ; ">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style=" text-decoration:underline ; "></span><br><br><span>20千克&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30000克&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;54.18千克&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.30吨&nbsp;&nbsp;&nbsp;0.023吨</span><br><br><span style=" text-decoration:underline ; "><o:p>&nbsp;</o:p></span><br><br><span style=" text-decoration:underline ; ">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span><div><span style="text-decoration:underline"><br></span> <table width="100%" border="1"><tbody><tr><td><br>&nbsp;<br></td><td><br><strong>保留整数<br></strong></td><td><strong><br>精确到十分位<br></strong></td><td><strong><br>保留两位小数</strong><br></td></tr><tr><td><br>0.9673<br></td><td><br>&nbsp;<br></td><td><br>&nbsp;<br></td><td><br>&nbsp;<br></td></tr><tr><td><br>16.4238<br></td><td><br>&nbsp;<br></td><td><br>&nbsp;<br></td><td><br>&nbsp;<br></td></tr><tr><td><br>29.6403<br></td><td><br>&nbsp;<br></td><td><br>&nbsp;<br></td><td><br>&nbsp;<br></td></tr></tbody></table> <br><span>2、</span><br><br><img src="//www.szxuexiao.com/uploadimages/2014/1029/20141029172936.jpg?m=0.7790889360476285"><br><br><span>3、</span><span style=" letter-spacing:-; ">某水泥厂计划9月份生产水泥205800吨,10月份生产水泥196500吨,9、10两个月一共生产水泥多少万吨?</span><span style=" letter-spacing:-; "></span><br><br><span>4、</span><span>甲数是乙数的10倍,若把乙数的小数点向右移动两位是4500,那么甲数是多少?</span><br><br></div></div>