1.72-0.8×1.9、0.24×1.2×150简便计算怎么算?
问题描述:
1.72-0.8×1.9、0.24×1.2×150简便计算怎么算?
答
1.72-0.8×1.9=1.72-0.8*(2-0.1)=0.12+0.08=0.2
0.24×1.2×150=0.24×1.2×50×3=0.72×60=43.2