25*1.25*2.4怎样简便运算

求解!急!在线等!I need to have some help!
2025-03-18 11:57:38
推荐回答(2个)
回答1:

25x1.25×2.4
={(1.25×2)+(1.25×0.4)}x25
=(2.5+0.5)x25
=3x25
=75
望采纳

回答2:

=(25✘0.3)✘(1.25✘8)
=7.5✘10
=75