9-0.225÷1.5×48 怎么简便计算?

分类: 作业答案 • 2022-01-09 18:05:45

问题描述：

答

9-0.225÷1.5×48
=9-(0.225×2)×6×8÷(1.5×2)
=9-0.45×6÷3×8
=9-0.45×2×8
=9-0.9×8
=9-7.2
=1.8