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)]=
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)]
=
答
6-3-1.5=1.5
答
6-3+1.5=4.5
答
[1-(0.5-0.25)]×6
=(1-0.25)×6
=0.75×6
=4.5