五年级数学分数加减法计算题100
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发布时间:2022-04-28 14:40
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时间:2022-06-19 05:38
4/7+1/14-1/2
=8/14+1/14-7/14
=2/14
=1/7
5/3-3/8-5/8
=5/3-(3/8+5/8)
=5/3-1
=2/3
3/5+3/11+7/5+11
=(3/5+7/5)+11+3/11
=2+11+2/11
=13又2/11
3/4-{5/6-1/3}
=3/4-(5/6-2/6)
=3/4-1/2
=3/4-2/4
=1/4