2.5(8-0.4)12.5简算

分类: 作业答案 • 2022-02-14 16:42:43

问题描述：

2.5*(8-0.4)*12.5简算

答

2.5*(8-0.4)*12.5
=2.5*12.5*(8-0.4)
=2.5*12.5*8-2.5*12.5*0.4
=2.5*(12.5*8)-(2.5*0.4)*12.5
=2.5*100-1*12.5
=250-12.5
=237.5

2.5*(8-0.4)*12.5简算