五年级上册练习与测试数学28页
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下面是答案:28:
1: 3/20 9/20
2: 3/8 3/5
3: 6/35 25/6 1/10
4: (1) 4/5x5/8=1/2
(2) 5/6x2/3=5/9
29:
5: (1) 6 (2) 1
(3) 3/16 (4) 35/72
6: 20x3/8=15/2 18/11x7/9=14/11
7: 9/10x1/3=3/10
9/10x2/9=1/5
9/10x=4/9=2/5
8: 3/8x3/4
下面是答案:28:
1: 3/20 9/20
2: 3/8 3/5
3: 6/35 25/6 1/10
4: (1) 4/5x5/8=1/2
(2) 5/6x2/3=5/9
29:
5: (1) 6 (2) 1
(3) 3/16 (4) 35/72
6: 20x3/8=15/2 18/11x7/9=14/11
7: 9/10x1/3=3/10
9/10x2/9=1/5
9/10x=4/9=2/5
8: 3/8x3/4
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