问题描述: 52.44*79.45+159*47.56+79.55*52.44 简便运算 1个回答 分类:数学 2014-10-25 问题解答: 我来补答 52.44*79.45+159*47.56+79.55*52.44 =52.44x(79.45+79.55)+159x47.56=52.44x159+159x47.56=(52.44+47.56)x159=100x159=15900 展开全文阅读