六年级4/5x4+2/5x2+5/1x16怎么算啊?
问题描述:
六年级4/5x4+2/5x2+5/1x16怎么算啊?
答
4/5=0.8;
0.8*4=3.2;
0.4*2=0.8;
80
=84.8