5.6x69.32+138.64x0.05+693.2x0.43用简便算法

分类: 作业答案 • 2021-12-30 13:07:01

问题描述：

答

5.6x69.32+138.64x0.05+693.2x0.43
=5.6x69.32+69.32x0.1+69.32x4.3
=69.32x(5.6+0.1+4.3)
=69.32x10
=693.2