3.820.69+3.820.31+38.2简便计算

分类: 作业答案 • 2022-01-09 18:04:03

问题描述：

3.82*0.69+3.82*0.31+38.2简便计算

答

3.82*0.69+3.82*0.31+38.2
=3.82*0.69+3.82*0.31+3.82*10
=3.82*（0.69+0.31+10）
=3.82*11
=42.02

3.82*0.69+3.82*0.31+38.2简便计算