五年级下册数学分数加减简便计算题

2024-05-23 15:21:11
好评回答
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/衡型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/猜拦中4-{5/6-1/3}穗山
=3/4-(5/6-2/6)
=3/4-1/2
=3/4-2/4
=1/4