7.2╳0.86的简便方法

7.2╳0.86的简便方法
2024-12-02 07:15:30
推荐回答(1个)
回答1:

7.2╳0.86
=(8-0.8)×0.86
=8×0.86-0.8×0.86
=6.88-0.688
=6.192