5.29/2.3-0.1X0.1简便算法0.28/35简便算法 84.68/4.5X(0.25+0.5)简便算法
问题描述:
5.29/2.3-0.1X0.1简便算法0.28/35简便算法 84.68/4.5X(0.25+0.5)简便算法
答
0.28/35=(0.35-0.07)/35=0.01-0.002=0.008
84.68/4.5X(0.25+0.5)=84.68/4.5X0.25+84.68/4.5X0.5=84.68/18+84.68/9
=84.68(1/18+1/9)=84.68/6