4.5-2.5×0.7÷5怎么简便?

2025-04-24 08:22:16
推荐回答(1个)
回答1:

4.5-2.5×0.7÷5
=4.5-(2.5÷5)×0.7
=4.5-0.5×0.7
=4.5-0.35
=4.15