问题描述: 简便计算 五年级 1个回答 分类:数学 2019-10-06 问题解答: 我来补答 解法一: 18.1x0.92+3.93 =18.1x(1-0.08)+3.93 =18.1-1.448+3.93 =18.1+2.482 =20.582 解法二: 18.1x0.92+3.93 =(18+0.1)x0.92+3.93 =16.56+0.092+3.93 =20.582 展开全文阅读