28ᘧ࿾25用简便方法怎么做?

2025-01-21 11:57:06
推荐回答(2个)
回答1:

简便计算过程方法如下
解:28×25
=(30-2)×25
=30×25-2×25
=750-50
=700

回答2:

遇25想4
28×25
=7×4×25
=7×100
=700