5.6乘69.32加138.64乘0.05加693.2乘0.43

分类: 作业答案 • 2022-01-09 18:03:57

问题描述：

答

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