1.25ᘧ࿾(0.8+4)ᘧ࿾2.5简算

2025-06-20 19:27:12
推荐回答(2个)
回答1:

1.25✖️(0.8+4)✖️2.5
=1.25×0.8×2.5+1.25×4×2.5
=2.5+12.5
=15

回答2:

(5/4×4+5/4×4/5)×2.5=6×2.5=6×5/2=15