六年级数学题/(1*2)+1/(2*3)+1/(3*4)+1/(4*5)+1/(5*6)+.+1/(99*100)=?1/(1*2_数学解答

六年级数学题/(1*2)+1/(2*3)+1/(3*4)+1/(4*5)+1/(5*6)+.+1/(99*100)=?
1/(1*2)+1/(2*3)+1/(3*4)+1/(4*5)+1/(5*6)+......+1/(99*100)=?

人气：146 ℃　时间：2019-09-25 12:50:50

解答

原式=1-1/2+1/2-1/3+1/3-1/4.+1/99-1/100=1-1/100=99/100