问题描述: 6又4/5*31.4+43又9/10*3.2同仁们!我要方法! 1个回答 分类:数学 2014-10-09 问题解答: 我来补答 6又4/5*31.4+43又9/10*3.2 =6.8x31.4+43.9x3.2=6.8x31.4+(31.4+12.5)x3.2=6.8x31.4+31.4x3.2+12.5x3.2=31.4x(6.8+3.2)+1.25x32=314+1.25x4x8=354行吗? 展开全文阅读