<div style="text-align: center;"><strong><font color="#ff0000">2014年小学六年级第一单元练习题</font></strong><br></div>
<div><br></div><br><strong><span>一、</span><span>填空：</span></strong><br><br><span>（1）</span>5/7<span>×</span><span>8表示的意义是( )</span><br><br><span> </span>5/7<span>×</span>1/8<span>表示的意义是( )</span><br><br><span>(2)故事书比科技书多</span>3/5<span>,</span>3/5<span>是把( )看作单位</span><span>”</span><span>1</span><span>”</span><span>,故事书是科技书的( )，关系式是（ ）</span><br><br><span>（3）四月份比五月份节约了</span>１/7<span>，</span>１/7<span>把（ ）看作单位“1”，四月份是五月份的（ ），等量关系是（ ）</span><br><br><span>（4）一桶油重</span>7/4<span>千克，倒出</span>1/6<span>千克，还剩( )千克。列式（ ).</span><br><br><span>一桶油重</span>7/4<span>千克，倒出</span>1/6<span>，还剩（ ）千克。列式（ ）</span><br><br><span>（5）已知a</span><span>×</span>7/3<span>=</span>11/12<span>×b=</span>11/11<span>×c,并且a,b,c都不等于0，把a,b,c这三个数按从小到大的顺序排列为（ ）。</span><br><br><span>（6）一堆货物，第一次运走了总数的一半，第二次运走的是第一次的一半，这堆货物还剩（ ）没有运完。</span><br><br><span>（6）把五一班的人调出</span>1/7<span>到五二班后，两班人数相等，原来五二班人数是五一班的</span><ruby>（）<rp>(</rp><rt>（）</rt><rp>)</rp></ruby><br><br><span>（7）一段路，第一周修全长的</span>2/5<span>，第二周</span>修第一周2/5，第二周修全长的<ruby> <rt></rt></ruby>.<br><br><span>(8)</span><span>生产一批零件，上午完成总数的</span>3/8<span>，下午完成余下的</span>2/5<span>，下午完成总数的（ ）。</span><br><br><strong><span>二、</span><span>用横线画出题中单位“1”的量，再把关系式补充完整。</span></strong><br><br><span>（1）</span><span>母鸡的只数比公鸡的只数多</span>1/4<span>.</span><br><br><span>（ ）</span><span>×</span>1/4<span>=（ ）</span><br><br><span>（ ）</span><span>×</span><span>（1+</span>1/4<span>）=（ ）</span><br><br><span>（ ）</span><span>×</span><span>（1+1+</span>1/4<span>）=（ ）</span><br><br><span>(2)</span><span>彩电现价比原价降低</span>１/7<span>。</span><br><br><span>（ ）</span><span>×</span>1/7<span>=（ ） （ ）</span><span>×</span><span>（1+</span>1/7<span>）=（ ）</span><br><br><span>（ ）</span><span>×</span><span>（1+1+</span>1/7<span>）=（ ）</span><br><br><strong><span>三、</span><span>计算</span></strong><br><br><span>1、</span><span>直接写出得数：</span><br><br>5/6<span>+</span>1/4<span>= 4.2</span><span>×</span>5/6<span>= </span>7/15<span>×</span><span>0.75=</span><br><br>1/3<span>×</span><span>1.5= </span>3/8<span>－</span>1/12<span>= 13</span><span>－</span>3/8<span>=</span><br><br><span>2、</span><span>脱式计算：</span><br><br><span>12</span><span>×</span>1/4<span>－</span>4/9<span> （</span>7/16<span>－</span><span>0.25）</span><span>×</span><span> </span>17/18<span> </span><br><br>1/4<span>×</span><span>（</span>3/4<span> </span><span>－</span>1/12<span>）+7 </span>5/3<span> </span><span>×</span>2/5<span> </span><span>－</span>2/3<span>×</span>5/6<br><br><span>3、</span><span>用简便方法计算：</span><br><br>3/7<span>－</span>3/7<span>×</span>2/5<span> </span>4/3<span>×</span>2/5<span> </span><span>＋</span>2/3<span>×</span>2/5<span>－</span>2/5<br><br><span>17</span><span>×</span>9/16<span> </span>63/64<span> </span><span>×</span><span>25</span><br><br>1/17<span>×</span>1/9<span> </span>1/5<span>×</span><span>27</span><span>＋</span>3/5<span>×</span><span>41</span><br><br><strong><span>四、</span><span>看图列式计算：</span></strong><br><br><span>桃树：</span><br><br><span>梨树：</span><br><br><strong><span>五、</span><span>解决问题：</span></strong><br><br><span>1、</span><span>六年级三个班学生帮助图书室修补图书。一班修补了54本，二班修补的是一班的</span>5/6<span>，三班修补的比二班少</span>1/5<span>。三班修补了多少本？</span><br><br><span>2、一本书240页，第一天看了全书的</span>1/4<span>，第二天看的是第一天的</span>2/3<span>，还剩下多少页？</span><br><br><span>3、一本书300页，第一天看了全书的</span>2/7<span>，第二天比第一天多看</span>2/5<span>，还剩下多少页？</span><br><br><span>4、一本书360页，第一天看了全书的</span>2/9<span>，第二天看了余下的</span>3/7<span>，还剩下多少页？</span><br><br><span>5、水果店运来苹果的5吨，运来的梨比苹果多</span>1/2<span>，运来的香蕉比梨多</span>1/2<span>，运来香蕉多少吨？</span><br><br><span>6、</span><span>一件衣服价格是400元，先涨价</span>1/5<span>，再降价</span>1/5<span>，现在的价格是多少元？比原来降低了多少元？</span><br><br><span>算一算：</span>1/2<span>+</span>1/4<span>+</span>1/8<span>＋</span>1/16<span>＋</span>1/32<span>＋</span>1/64<span>＋</span>1/128<br><br>
六年级上