人教新课标：五年级下册数学一课一练-真分数与假分数-

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1、人教新课标：五年级下册数学一课一练-《真分数与假分数》同步练习一、单选题1.要使是假分数是真分数x就是（ ）A. 6                                              B. 7                                              C. 82.把3化成分母是4的假分数是（ ）A.                                             B.                                             C. 3.如果

2、是假分数，是真分数，那么x应（ ）A. =4                                           B. =5                                           C. ＞44.化成带分数是（ ）A. 6                                          B. 5                                          C. 45.一个分数，它的分子除以分母商1余1，这个分数是（ ）A. 真分数                  

3、             B. 假分数                               C. 带分数                               D. 无法确定6.若可以化成带分数，则（ ）A. a＞b                                         B. a＜b                                         C. a=b7.分子是5的假分数有（ ）个。A. 3                                           B. 4 

4、                                          C. 5                                           D. 68.当一个分数的分子是分母的倍数，这个分数实际上是（ ）A. 假分数                                 B. 带分数                                 C. 真分数                                 D. 整数9.5里面有20个（ ）A.                    

5、                       B.                                           C.                                           D. 10.分数单位是的真分数有（  ）个。A. 1个                                       B. 2个                                       C. 3个                                       D. 4个11.一个

6、最简真分数，分子与分母的和是15，这样的分数一共有（ ）。第15页共15页A. 1个                                       B. 2个                                       C. 3个                                       D. 4个12.两个分数通分后的新分母是原来两个分母的乘积，原来的两个分母一定（  ）。A. 都是质数                             B. 是相邻的自然数级                 

7、            C. 是互质数13.小于 而大于 的分数（ ）A. 有1个                                     B. 有2个                                     C. 有无数个14.分子相同的分数（ ）A. 分数单位相同                   B. 分数的大小相同                   C. 所含的分数单位的个数相同15.在 、 、 三个分数中，最大的分数是（ ）A.                                      

8、        B.                                              C. 16