问题描述: 0.397*0.00397*3600+6.3*3.97=? 1个回答 分类:数学 2014-09-20 问题解答: 我来补答 =0.397*0.397*36+6.3*3.97=0.397*0.397*36+63*0.397=0.397*(0.397*36+63)=0.397*(0.397*9*4+7*9)=0.397*9*(0.397*4+7)=30.684924 展开全文阅读