能简便的要用简便计算.[1-(0.5-0.25)]×6 =

问题描述:

能简便的要用简便计算.[1-(0.5-0.25)]×6 =
能简便的要用简便方法计算。
4.05÷[1.8×(3.36-2.86)]

[1-(0.5-0.25)]×6
=(1-0.25)×6
=0.75×6
=4.5