3.2乘99.9的简便方法怎么算?
问题描述：
3.2乘99.9的简便方法怎么算?
答
3.2*99.9
=3.2*(100-0.1)
=320-0.32
=319.68
3.2乘99.9的简便方法怎么算?
3.2*99.9
=3.2*(100-0.1)
=320-0.32
=319.68