简便算法:7.3×1.5+0.6×7.3-7.3×0.1

问题描述:

简便算法:7.3×1.5+0.6×7.3-7.3×0.1

7.3(1.5+0.6-0.1)=7.3*2=14.6

提取公因式,7.3(1.5+0.6-0.1)=7.3*2=14.6

7.3×1.5+0.6×7.3-7.3×0.1
=7.3×(1.5+0.6-0.1)
=7.3×2
=14.6