11.17+23.345+8.22+80.61用简便方法怎样计算

分类: 作业答案 • 2021-12-19 11:37:55

问题描述：

答

11.17+23.345+8.22+80.61
=(11.17+8.22+80.61)+23.345
=100+23.345
=123.345