问题描述: 计算下面这道题(要简算)5.6*69.32+138.64*0.05+693.2*0.43 1个回答 分类:数学 2014-10-07 问题解答: 我来补答 5.6*69.32+138.64*0.05+693.2*0.43 =5.6*69.32+69.32*2*0.05+69.32*10*0.43 =5.6*69.32+69.32*0.1+69.32*4.3 =69.32*(5.6+0.1+4.3) =69.32*10 =693.2 展开全文阅读