12.5*括号8+0.4括号*2.5巧算怎么做

2025-05-11 03:04:09
推荐回答(1个)
回答1:

原式=12.5×2.5×8+12.5×2.5×0.4
=12.5×8×2.5+12.5×1
=100×2.5+12.5
=250+12.5
=262.5