问题描述: 1/2+1/6+1/12+1/20+1/30 六年级 1个回答 分类:数学 2020-07-10 问题解答: 我来补答 解: 1/2+1/6+1/12+1/20+1/30 =1/(1x2)+1/(2x3)+1/(3x4)+1/(4x5)+1/(5x6) =(1-1/2) +(1/2-1/3)+……+(1/5-1/6) =1-1/6 =5/6 展开全文阅读