13.7+1.24×1.37-2.4×0.137 简便

分类: 作业答案 • 2022-01-02 13:31:57

问题描述：

答

13.7+1.24*1.37-2.4*0.137
=10*1.37+1.24*1.37-0.24*1.37
=1.37(10+1.24-0.24)
=1.37*11
=15.07