3.2乘38加32乘6.2 用简便方法

2024-11-18 19:32:29
推荐回答(2个)
回答1:

3.2x38+32x6.2
=3.2x38+3.2x10x6.2
=3.2x38+3.2x62
=3.2x(38+62)
=3.2x100
=320

回答2:

用计算器比较简便~