4x(8-0.8)×12.5简便方法?

2025-04-06 14:19:42
推荐回答(1个)
回答1:

4x(8-0.8)x12.5
=4x12.5x(8-0.8)
= 50x(8-0.8)
=50x8-50x0.8
=400-40
=360