2012年小学四年级数学第二学期第四单元考试试卷

<div><strong>一、直接写出得数。(10分)</strong></div><div><br></div><div>3.5×100= &nbsp; 2.74×10= &nbsp; &nbsp;0.125×1000= &nbsp; &nbsp;5.03÷10= &nbsp; 7÷10= &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;33.5÷100= &nbsp; &nbsp; 6.2×10÷100= &nbsp; 0.1÷10= &nbsp; &nbsp;3.2÷100= &nbsp; 0.67÷10×100=</div><div><br></div><div><br></div><div><strong>二、我会填。(20分)</strong></div><div><br></div><div>1、 &nbsp;每相邻的两个计数单位之间的进率是( &nbsp; &nbsp; )。</div><div><br></div><div>2、 小数点左边第二位是( &nbsp; &nbsp; )位,它的计数单位是( &nbsp; &nbsp; ),小数点右边第一位是( &nbsp; &nbsp; )位,它的计数单位是( &nbsp; &nbsp; )。(2分)</div><div><br></div><div>3、 小数8.25读作( &nbsp; &nbsp; ),8表示8个( &nbsp; &nbsp; ),5表示5个( &nbsp; &nbsp; )。</div><div><br></div><div>4、 3个1,4个0.1和5个0.01写成小数是( &nbsp; &nbsp; )。</div><div><br></div><div>5、 7.03的计数单位是( &nbsp; &nbsp; ),它有( &nbsp; &nbsp;)个这样的计数单位。0.567的计数单位是( &nbsp; &nbsp; &nbsp;),它有( &nbsp; &nbsp; )个这样的计数单位。(2分)</div><div><br></div><div>6、 大于4而小于5的一位小数有( &nbsp; &nbsp; &nbsp;)个。</div><div><br></div><div>7、 2003年我国在校小学 生116897000人,改写成用“亿”作单位的数是( &nbsp; &nbsp; &nbsp; &nbsp;),保留两位小数约是( &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;)亿人。</div><div><br></div><div>8、 小数点向右移动一位,原数就( &nbsp; &nbsp; &nbsp; ),向左移两位,原数就( &nbsp; &nbsp; &nbsp; )</div><div><br></div><div>9、 把3.8扩大( &nbsp; &nbsp; &nbsp;)倍是38,缩小( &nbsp; &nbsp; &nbsp;)倍是0.038。</div><div><br></div><div>把0.15缩小为原数的十分之一是( &nbsp; &nbsp; &nbsp; )。</div><div><br></div><div>10、在○里填上“>”、“<”或“=”。(3分)</div><div><br></div><div>0.18 ○ 0.179 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0.50 ○ 0.5 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0.1 ○ 0.0999</div><div><br></div><div>4.954 ○ 4.96 &nbsp; &nbsp; 6.8公顷 ○ 6公顷8平方米 &nbsp; &nbsp; 108厘米 ○ 10.1分米</div><div><br></div><div><br></div><div><strong>三、我来当法官。(6分)</strong></div><div><br></div><div>1、小数都比整数小。<span class="Apple-tab-span" style="white-space:pre"> </span>            &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;(    )</div><div><br></div><div>2、小林身高是11.4米.<span class="Apple-tab-span" style="white-space:pre"> </span>            &nbsp; &nbsp; &nbsp;(    )</div><div><br></div><div>3、0.58读作:零点五十八。<span class="Apple-tab-span" style="white-space:pre"> </span>             &nbsp; &nbsp;(    )</div><div><br></div><div>4、0.3是3的十分之一, 是0.03的10倍.<span class="Apple-tab-span" style="white-space:pre"> </span>    &nbsp; &nbsp; &nbsp; &nbsp;(    )</div><div><br></div><div>5、把7写成两位小数是0.07.<span class="Apple-tab-span" style="white-space:pre"> </span>           &nbsp; &nbsp;(    )</div><div><br></div><div>6、去掉小数点后面的0,小数的大小不变。 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ( &nbsp; &nbsp; )</div><div><br></div><div><br></div><div><strong>四、我会选。(10分)</strong></div><div><br></div><div>1、下列各数中,去掉0后大小不变的是( &nbsp; &nbsp; )</div><div><br></div><div>A、300 &nbsp; &nbsp; &nbsp; B、3.03 &nbsp; &nbsp; &nbsp; &nbsp; C、3.300</div><div><br></div><div>2、 0.6和0.7之间有( &nbsp; &nbsp; &nbsp;)小数。</div><div><br></div><div>A、0个 &nbsp; &nbsp; &nbsp; B、1个 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;C、无数个</div><div><br></div><div>3、 与7最接近的是( &nbsp; &nbsp; &nbsp;)</div><div><br></div><div>A、6.899 &nbsp; &nbsp; B、7.01 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;C、7.1</div><div><br></div><div>4、 在2.2,2.02,2.202中最小的是( &nbsp; &nbsp; &nbsp;)</div><div><br></div><div>A、2.02 &nbsp; &nbsp; &nbsp;B、2.2 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; C、2.202</div><div><br></div><div>5、 一个小数的小数点向左移动两位,这个数就( &nbsp; &nbsp; &nbsp;)&nbsp;</div><div><br></div><div>A、扩大到原数的100倍 &nbsp; &nbsp; &nbsp; B、缩小到原数的一百分之一 &nbsp;</div><div><br></div><div>C、减少到原数的一百分之一 &nbsp;</div><div><br></div><div><br></div><div><strong>五、生活中的小数。(8分)</strong></div><div><br></div><div>5.1元=( &nbsp; &nbsp;)元( &nbsp; &nbsp; )分 &nbsp; &nbsp; &nbsp;2.06千米=( &nbsp; &nbsp; &nbsp;)米</div><div><br></div><div>6米3厘米=( &nbsp; &nbsp;)厘米 &nbsp; &nbsp; &nbsp; 0.8平方米=( &nbsp; &nbsp; &nbsp;)平方厘米</div><div><br></div><div>3吨40千克=( &nbsp; &nbsp; &nbsp; &nbsp;)吨 &nbsp; &nbsp; &nbsp; &nbsp;0.6公顷=( &nbsp; &nbsp; )平方米</div><div><br></div><div>1时30分=( &nbsp; &nbsp; &nbsp; &nbsp;)时 &nbsp; &nbsp; &nbsp; &nbsp;350平方米=( &nbsp; &nbsp; &nbsp; &nbsp;)公顷</div><div><br></div><div><br></div><div><strong>六、涂色表示下面各小数:(6分)</strong></div><div><br></div><div><img src="//www.szxuexiao.com/uploadimages/2012/0409/20124911524.jpg?m=0.28370161377824843"><br></div><div><br></div><div><br></div><div><strong>七、写出箭头所指的小数。(4分)</strong><br></div><div><br></div><div><img src="//www.szxuexiao.com/uploadimages/2012/0409/2012491178.jpg?m=0.9680631016381085"><br></div><div><br></div><div><div style="layout-grid:15.6000pt; "><strong>八、按要求写数。(6分)</strong><table style="border-collapse:collapse; mso-table-layout-alt:fixed; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; "><tbody><tr><td width="75"></td><td width="88">保留整数</td><td width="132">精确到十分位</td><td width="120">保留两位小数</td><td width="152">四舍五入到千分位</td></tr><tr><td width="75">2.7384</td><td width="88"></td><td width="132"></td><td width="120"></td><td width="152"></td></tr><tr><td width="75">20.0921</td><td width="88"></td><td width="132"></td><td width="120"></td><td width="152"></td></tr><tr><td width="75">9.8967</td><td width="88"></td><td width="132"></td><td width="120"></td><td width="152"></td></tr></tbody></table><br></div><div><strong><br></strong></div><div><strong>九、按排列下面各数:(10分)</strong></div><div style="layout-grid:15.6000pt; "><br></div><div style="layout-grid:15.6000pt; ">1、&nbsp;&nbsp;0.76、&nbsp;&nbsp;0.067、&nbsp;&nbsp;0.076、&nbsp;&nbsp;0.67、&nbsp;&nbsp;0.607(&nbsp;&nbsp;&nbsp;&nbsp;)&nbsp;&lt;&nbsp;(&nbsp;&nbsp;&nbsp;&nbsp;)&nbsp;&lt;&nbsp;(&nbsp;&nbsp;&nbsp;&nbsp;)&nbsp;&lt;&nbsp;(&nbsp;&nbsp;&nbsp;&nbsp;)&nbsp;&lt;&nbsp;(&nbsp;&nbsp;&nbsp;&nbsp;)</div><div style="layout-grid:15.6000pt; "><br></div><div style="layout-grid:15.6000pt; ">2、几个同学在一次短跑比赛中的成绩如下:小明8.30&nbsp;秒,小军8.23秒,小东8.03秒,小强8.32秒,请把他们的成绩按名次从高到低排列起来。&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;&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;十、</div><div style="layout-grid:15.6000pt; "><br></div><div><strong>解决问题。(20分)</strong></div><div style="layout-grid:15.6000pt; "><br></div><div style="layout-grid:15.6000pt; ">1、1千克芝麻可以榨出芝麻油0.46千克,100千克芝麻可以榨出芝麻油多少千克?(4分)</div><div style="layout-grid:15.6000pt; "><br></div><div style="layout-grid:15.6000pt; ">2、每100千克糖水中含糖4.5千克,1千克糖水中含糖多少千克?&nbsp;&nbsp;&nbsp;1吨糖水中含糖多少千克?(5分)</div><div style="layout-grid:15.6000pt; "><br></div><div style="layout-grid:15.6000pt; ">3、一块正方形菜地边长为40米,把它的边长缩小为原来的一千分之一,缩小后的图形周长是多少?(5分)4、&nbsp;(6分)<table><tbody><tr><td width="112" rowspan="2">品名</td><td width="113" rowspan="2">单价(元)</td><td width="342" colspan="3">数量</td></tr><tr><td width="114">10</td><td width="114">100</td><td width="114">1000</td></tr><tr><td width="112">笔记本</td><td width="113">6.55</td><td width="114"></td><td width="114"></td><td width="114"></td></tr><tr><td width="112">钢笔</td><td width="113">13.8</td><td width="114"></td><td width="114"></td><td width="114"></td></tr><tr><td width="112">文具盒</td><td width="113">7.5</td><td width="114"></td><td width="114"></td><td width="114"></td></tr><tr><td width="112">橡皮擦</td><td width="113">0.5</td><td width="114"></td><td width="114"></td><td width="114"></td></tr></tbody></table></div></div>