能简便的就简便:(7⼀12-1⼀5)×60

2024-11-29 20:34:42
推荐回答(3个)
回答1:


运用乘法分配率

回答2:

(7/12-1/5)×60
=7/12×60-1/5×60
=7×5-12
=35-12
=23

回答3:

=7/12*60-1/5*60
=35-12
=23