5.6X69.32+138.64X0.05+693.2X0.43

分类: 作业答案 • 2022-01-09 18:01:15

问题描述：

5.6X69.32+138.64X0.05+693.2X0.43
简便运算
简便算法

答

5.6*69.32+138.64*0.05+693.2*0.43
=5.6*69.32+69.32*2*0.05+69.32*10*0.43
=5.6*69.32+69.32*0.1+69.32*4.3
=69.32*(5.6+0.1+4.3)
=69.32*10
=693.2