25*6-12525的简便运算

25*6-12525的简便运算
2024-12-05 12:03:54
推荐回答(1个)
回答1:

25×6-125×25
=25×(6-125)
= -119×25
= -(120-1)×25
= -(30×4-1)×25
= -(30×4×25-1×25)
= -(30×100-25)
= -(3000-25)
= -2975