3.8乘5.8加7.2乘5.8减5.8简便写法

2024-12-02 14:09:23
推荐回答(2个)
回答(1):

3.8乘5.8加7.2乘5.8减5.8
=(3.8加7.2减1)乘5.8
=10乘5.8
=58

回答(2):

3.8乘5.8加7.2乘5.8减5.8
=(3.8+7.2-1)×5.8
=10×5.8
=58