7.2一7.2X0.9简便算法怎么讲解?

2024-11-02 15:29:35
推荐回答(2个)
回答(1):

7.2X1-7.2X0.9
=(1-0.9)X7.2
=0.1X7.2
=0.72
希望可以帮到您!

回答(2):

7.2-7.2×0.9
=7.2×(1-0.9)
=7.2×0.1
=0.72