5.72×1.8+0.7×5.72-2.5×1.72简便计算

分类: 作业答案 • 2022-02-27 13:22:18

问题描述：

答

5.72×1.8+0.7×5.72-2.5×1.72 =5.72*(1.8+0.7)-2.5*1.72 =5.72*2.5-2.5*1.72 =2.5*(5.72-1.72) =2.5*4 =10