问题描述: 9/10*34.6+111*1.8+54.3/(除以)10/9 简便计算 1个回答 分类:数学 2014-11-25 问题解答: 我来补答 9/10×34.6+111×1.8+54.3÷10/9 =0.9×34.6+111×2×0.9+54.3×0.9 =0.9×(34.6+222+54.3) =(1-0.1)×310.9 =1×310.9-0.1×310.9 =310.9-31.09 =279.81 展开全文阅读