【优选】五年级下册数学一课一练-分数和小数的互化｜人教新课标（2014秋）（含答案）

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1、《分数和小数的互化》同步练习一、单选题1.两个自然数相除，不能整除的时候，它们的商可以用（ ）来表示。A. 分数                                        B. 循环节                                        C. 余数2.把0.25化成分数,正确的是(  )A.                                           B.                                           C.                                      

2、     D. 3. 和0.1666相比较（   ）A. 大                                B. 0.1666大                                C. 一样大                                D. 不确定4.  ＝（）A. 0.35                                     B. 0.45                                     C. 0.55                                     D. 0.655.0

3、.4＝ A. 5                                           B. 6                                           C. 7                                           D. 8[来源:6.把下面的小数化成分数5.75＝(   )A.                                        B.                                        C.                                    

4、    D. 7.甲每小时做7个零件,乙每小时做8个零件。做一个零件（ ）A. 甲用的时间多                        B. 乙用的时间多                        C. 两人用的时间同样多8.把5.06化成分数是（ ）A.                                      B.                                      C.                                      D. 9. 是真分数，而且能化成有限小数，x最大是（ ）A. 12              

5、                           B. 13                                         C. 14                                         D. 1510.一个最简分数，如果分母中只含有因数（），再无其他因数，那么这个分数可以化成有限小数；否则就不能化成有限小数。A. 2和3                                     B. 3                                     C. 3和5                          

6、           D. 2和511. 、 、 、 中，能化为有限小数的有（）个。A. 1                                           B. 2                                           C. 3                                           D. 412.下面的分数，能化成有限小数的是（）A.                                          B.                                          C.

7、                                          D. 13.比 大，比 小的小数是（）A. 0.25                                     B. 0.19                                     C. 0.35                                     D. 0.3814.大于0.25而小于0.5的分数