五年级下册数学分数练习题带答案20道!-查字典问答网
姜艳姝
*是乘号
1/5*4=4/5
2/7*3=7/6
2/21*5=10/21
1/11*3=3/11
1/8*5=5/8
5/18*3=5/6
1/4*2=1/2
2/13*4=8/13
4/17*3=12/17
6/19*3=18/19
7/23*3=21/23
4/27*5=20/27
1/8*4=1/2
1/7*3=3/7
5/12*2=5/6
4/7*14=8
2/15*3=2/5
1/4*20=5
4/5*20=16
5/18*3=5/6
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