(0.872+8.72×2.4+87.2)×8 简算

分类: 作业答案 • 2022-01-17 23:16:01

问题描述：

答

(0.872+8.72×2.4+87.2)×8
=(8.72×0.1+8.72×2.4+8.72×10)×8
=8.72×（0.1+2.4+10）×8
=8.72×12.5×8
=8.72×100
=872