计算:1/5x8加1/8x11加1/11x4.… 1/98x101怎么算?加上讲解

问题描述:

计算:1/5x8加1/8x11加1/11x4.… 1/98x101怎么算?加上讲解

1/5x8加1/8x11加1/11x14.… 1/98x101
=(1/5-1/8+1/8-1/11+1/11-1/14+……+1/98-1/101)÷3
=(1/5-1/101)÷3
=96/505÷3
=32/505