70.12减0.12乘(4加2.5)怎么巧算,急急急

2025-05-13 12:39:48
推荐回答(2个)
回答1:

70.12-0.12×(4+2.5)
=70.12-0.12×4-0.12×2.5
=70.12-0.48-0.3
=69.34

回答2:


如图