56.65-(18.22+16.65)-18.22简便运算

分类: 作业答案 • 2021-12-03 21:21:21

问题描述：

答

56.65-(18.22+16.65)-18.22
=56.65-18.22-16.65-18.22
=(56.65-16.65)-(18.22+18.22)
=40-36.44
=3.56