0.32乘6.7加3.2乘0.43-0.32等于多少的简便

问题描述:

0.32乘6.7加3.2乘0.43-0.32等于多少的简便

0.32×6.7+3.2×0.43-0.32
=0.32×6.7+0.32×4.3-0.32
=0.32×(6.7+4.3-1)
=0.32×10
=3.2