8-4.68/4.5X(0.25+0.5)简便算法

分类: 作业答案 • 2022-01-02 13:34:48

问题描述：

答

8-4.68/4.5X(0.25+0.5)
=8-468/450*(25+50)/100
=8-468/(75*6)*75/100
=8-468/6/100
=8-6*78/6/100
=8-78/100
=(800-78)/100
=722/100
=7.22