五年级暑假作业数学 56页
信息发布者：Sarah789
1.
25/24 1/4
5/8 8/15
29/24 17/42
2.
解：
x=4/6
x=2/3
解：
x=1/4
解：
x=13/14
解：
x=4/5-7/10+1/2
x=3/5
3.
3/5+1/2+3/10
=6/10+5/10+3/10
=7/5
6/7-1/2-3/14
=12/14-7/14-3/14
=1/7
8/9-(2/9+1/3)
=7/9-3/9
=4/9
11/12-(3/4-1/2)
=11/12-9/12+6/12
=2/3
8/11+7/9+3/11
=1+7/9
=16/9
1/2+4/5-1/2+4/5
=4/5+4/5
=8/5
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