65.4-(32.5 15.4)怎样简便计算

分类: 作业答案 • 2021-12-31 10:42:45

问题描述：

答

题目应该是65.4-(32.5+15.4)吧
65.4-(32.5+15.4)
=65.4-32.5-15.4
=65.4-15.4-32.5
=50-32.5
=17.5

65.4-(32.5 15.4)怎样简便 计算