14.5+7.65*4+25.5+2.35*4+40等于多少

问题描述:

14.5+7.65*4+25.5+2.35*4+40等于多少
用简便方法做 尽量写出算式

14.5+7.65*4+25.5+2.35*4+40 =14.5+25.5+40+4(7.65+2.35) =40+40+4*10 =120