0.87乘以7.13加8.7乘以0.187加0.87怎么用简便方法算?

分类: 作业答案 • 2021-12-18 22:42:49

问题描述：

答

0.87乘以7.13加8.7乘以0.187加0.87
=0.87*7.13+0.87+1.87+0.87
=0.87*(7.13+1.87+1)
=0.87*10
=8.7