3.2乘1.8加2.54等于多少(要简便计算)急
问题描述:
3.2乘1.8加2.54等于多少(要简便计算)急
答
buz
答
buzhidao
答
原式=3.2×(2-0.2)+2.54
=6.4-0.64+1.9+0.64
=6.4+2-0.1
=8.3
答
3.2×1.8+2.54
=8.3