4.78-1.28+1.22-0.72怎么简便计算
问题描述:
4.78-1.28+1.22-0.72怎么简便计算
答
(4.78+1.22)-(1.28+0.72)
答
4.78+1.22-(1.28+0.72)=6-2=4
4.78-1.28+1.22-0.72怎么简便计算
(4.78+1.22)-(1.28+0.72)
4.78+1.22-(1.28+0.72)=6-2=4