3-2⼀5-1⼀2-3⼀5等于多少简便计算?

3-2/5-1/2-3/5等于多少?简便计算
2024-11-17 10:25:56
推荐回答(2个)
回答1:

简便方法计算可以运用添加括号来巧算,计算过程如下:
3-2/5-1/2-3/5
=3-(2/5+3/5)-1/2
=3-5/5-1/2
=3-1-1/2
=2-1/2
=2-0.5
=1.5
望采纳。

回答2:

3-2/5-1/2-3/5
=3-(2/5+3/5)-1/2
=3-1-1/2
=2-1/2
=3/2