<div><div style="text-align: center;"><strong><font color="#ff0000">2017年小学四年级第二学期数学第六单元试题</font></strong></div><br><span><strong>一、填空题。(每空1分,共22分)</strong></span><br><br><span>1.1里面有(</span><span> </span><span>)</span><span>个0.1;36个0.01是(</span><span> </span><span>)</span><span>;0.008里面有8个(</span><span> </span><span>)</span><span>。</span><span> </span><br><br><span>2</span><span>.18.49读作(</span><span> </span><span>)</span><span>;90.08读作(</span><span> </span><span>)</span><span>;三十点六八写作(</span><span> </span><span>)</span><span>。</span><span> </span><br><br><span>3</span><span>.小数点左边第一位是(</span><span> </span><span>)</span><span>位,右边第一位是(</span><span> </span><span>)</span><span>。</span><br><br><span>4.一个小数,整数部分的最低位是(</span><span> </span><span>)</span><span>位,小数部分的最高位是(</span><span> </span><span>)</span><span>位。</span><span> </span><br><br><span>5</span><span>.一个小数它的百位和百分位上都是8,其它各位都是“</span><span> </span><span>0</span><span>”,这个数是(</span><span> </span><span>)</span><span>。</span><span> </span><br><br><span>6</span><span>. 3个百分之一和5个1组成的数是(</span><span> </span><span>)</span><span>。</span><span> </span><br><br><span>7.大于0,而小于1的最大的一位小数是(</span><span> </span><span>)</span><span>。</span><span> </span><br><br><span>8. 6.24由6个(</span><span> </span><span>)</span><span>,2个(</span><span> </span><span>)</span><span>和4个(</span><span> </span><span>)</span><span>组成。</span><span> </span><br><br><span>9.把一个苹果平均分成10份,取其中3份,写成分数是(</span><span> </span><span>)</span><span>,写成小数是(</span><span> </span><span>)</span><span>。</span><br><br><span>10.计算小数加、减法,先把各数的(</span><span> </span><span>)</span><span>对齐,再按照(</span><span> </span><span>)</span><span>加、减法法则进行计算,得数里的(</span><span> </span><span>)</span><span>要和横线上面的小数点对齐。</span><span> </span><br><br><span>11.把2元3分改写成用“元”作单位应是(</span><span> </span><span>)</span><span>。</span><span> </span><br><strong><br><span>二、判断题。(对的打“√”,错的打“×”)(10分)</span><span> </span></strong><br><br><span>1.在小数减法中,整数减法的运算性质也可使用。(</span><span> </span><span>)</span><span> </span><br><br><span>2.</span><span>小数的位数越多,小数就越大。 ( </span><span> </span><span>)</span><span> </span><br><br><span>3.甲数是6.7,比乙数多1.62,乙数是8.32。 (</span><span> </span><span>)</span><span> </span><br><br><span>4.0.56-0.056=0</span><span>。 (</span><span> </span><span>)</span><span> </span><br><br><span>5.3.60元比3元9分少些。 (</span><span> </span><span>)</span><span> </span><span> </span><br><strong><br><span>三、选择题。(把正确答案的序号填在括号里)(10分)</span></strong><br><br><span>1、王老师买了2本故事书,价格分别是3.86元、7.28元,她付给售货员15元,应找会( </span><span> </span><span>)</span><br><br><span>A、 11.14元 B、7.72元 C、3.86元 D、7.28元</span><br><br><span style="Tahoma;background:;mso-shading:;">2、如果被减数和减数都增加2.4,那么它们的差(</span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;"> </span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;"> ) </span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;"> </span><span style="background:;mso-shading:;"> </span><br><br><span style="Tahoma;background:;mso-shading:;">A、增加2.4</span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;"> </span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;"> B、不变 </span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;">C、减少2.4</span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;"> </span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;">D、增加4.8 </span><span style="Tahoma;background:;mso-shading:;"></span><br><br><span style="Tahoma;background:;mso-shading:;">3、把3.26的小数点去掉,这个数比原数大(</span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;"> </span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;"> </span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;">) </span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;"> </span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;"></span><br><br><span style="Tahoma;background:;mso-shading:;">A、0.74</span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;"> </span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;"> B、300</span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;"> </span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;">C、322.74</span><br><br><span style="Tahoma;background:;mso-shading:;">4、用米作单位计算,“8米6厘米+5米60厘米”的正确算式是(</span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;"> </span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;">)</span><br><br><span style="Tahoma;background:;mso-shading:;">A、8.6+5.6</span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;"> </span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;">B、8.06+5.06</span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;"> </span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;">C、8.06+5.6 </span><span style="Tahoma;background:;mso-shading:;"></span><br><br><span style="Tahoma;background:;mso-shading:;">5、0.8和0.80比较。 </span><span style="Tahoma;background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;">( )</span><span style="Tahoma;background:;mso-shading:;"></span><br><br><span style="Tahoma;background:;mso-shading:;">A、大小相等,意义相同</span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;"> </span><span style="background:;mso-shading:;"> </span><span style="Tahoma;background:;mso-shading:;">B、大小相等,意义不同 C、大小不等,意义相同</span><br><br><strong><span>三、直接写出得数</span><span> (6分)</span></strong><br><br><span>4.2+3.3=</span><span> </span><span> </span><span>7.8</span><span>-3.1=</span><span> </span><span>9.3</span><span>+2.5=</span><br><br><span>2.34</span><span>+3.63=</span><span> </span><span>5.8</span><span>-1.9=</span><span> </span><span>2.3</span><span>+3.7=</span><span> </span><br><br><span><strong>四、计算并验算(12分)</strong></span><br><br><span>7.3+5.6</span><span> </span><span>9.6</span><span>-4.3</span><span> </span><br><br><br><span>7.85+9.19</span><span> </span><span>3.21+7.83</span><span> </span><br><br><br><span><strong>五、用简便方法计算下面各题。(12分)</strong></span><br><br><span>18.5-(8.5+7.9)</span><span> </span><span>18.75+76.3+1.25+23.7</span><br><br><span> </span><br><br><span>8.5+7.6-8.5+2.4</span><span> </span><span>(2.524+1.389)-(0.524+1.389)</span><br><br><br><strong><span>六、列式计算</span><span>(8分)</span></strong><br><br><span>1.</span><span>比7.36多4.38的数是多少?</span><span> </span><br><br><span>2.3.29和13.57相差多少?</span><span> </span><br><br><span>3. 甲数是3.21,比乙数少3.58,乙数是多少?</span><span> </span><br><br><span>4.3.28比12.39少多少?</span><span> </span><br><br><strong><span>七、解决问题</span><span>(20分)</span></strong><br><br><span>1.学校锅炉房十二月份燃油3.1吨,比十一月份多燃0.3吨,十一月份燃油多少吨?</span><br><br><span>2.一个修路队,第一天修路1.98千米,第二天修1.79千米,两天共修多少千米?</span><br><br><span>3.小明买本子用去0.4元,买橡皮用去0.3元,他交给售货员1元钱,就找回多少元?</span><span> </span><br><br><span>4.一辆大车每次运货10.5吨,比小车多运2.3吨,两辆车每次一共可运货多少吨?</span><span> </span><br><br><br><div style="text-align: center;"><strong><font color="#38761d">2017年小学四年级数学下册《第六单元》测试题参考答案</font></strong></div><br><span><strong>一、填空</strong></span></div><div><span><br></span></div><div><span>1</span><span>、10</span><span> </span><span>0.36</span><span> </span><span>0.001</span></div><div><span><br></span></div><div><span>2.</span><span>十八点四九</span><span> </span><span>九十点零八</span><span> </span><span>30.68</span></div><div><span><br></span></div><div><span>3.</span><span>个位、十分</span><span> </span><span>位</span></div><div><span><br></span></div><div><span>4</span><span>、个</span><span> </span><span>十分</span></div><div><span><br></span></div><div><span>5</span><span>、0.1</span><span> </span><span>1</span></div><div><span><br></span></div><div><span>6</span><span>、800.08</span></div><div><span><br></span></div><div><span>7</span><span>、5.03</span></div><div><span><br></span></div><div><span>8</span><span>、0.9</span></div><div><span><br></span></div><div><span>9</span><span>、1</span><span> </span><span>0.1</span><span> </span><span>0.01</span></div><div><span><br></span></div><div><span>10</span><span>、3/10</span><span> </span><span>0.3</span></div><div><span><br></span></div><div><span>11</span><span>、小数点</span><span> </span><span>整数</span><span> </span><span>小数点</span></div><div><span><br></span></div><div><span>12</span><span>、2.03元</span></div><div><span><br></span></div><div>13、0.9 <br><br><strong>二、判断</strong><br><br>1、 √ 2、 × 3、 × 4、 × 5、× <br><br><strong>三、选择题</strong><br><br>1、C 2、B 3、C 4、C 5、B<br><br><strong>三、直接写出得数</strong> 略<br><br><strong>四、计算并验算</strong><br><br>12.9 5.3 17.04 11.04 <br><br><strong>五、用简便方法计算下面各题。</strong><br><br>2.1 120 10 2 <br><br><strong>六、列式计算</strong><br><br>1.7.36+4.38=11.74 2.13.57-3.29=10.28 <br><br>3.3.21+3.58=6.79 4.12.39-3.28=9.11 <br><br><strong>七、解决问题</strong><br><br>1.3.1-0.3=2.8(吨) <br><br>2.1.98+1.79=3.77(千米) 3.1-0.4-0.3=0.3(元) <br><br>4.10.5-2.3+10.5=18.7(吨)<br></div>
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四年级下