0.01+0.02+0.03+0.04……+0.97+0.98+0.99
=1/100(1+2+3+.......97+98+99)
1+2+3+.......97+98+99=(1+100)+(2+99)+......(50+51)=
101×50=5050 -99=4951
0.01+0.02+0.03+0.04……+0.97+0.98+0.99=1/100*4951=49.51
俊狼精英为您解答
=(0.01+0.99)+(0.02+0.98)+……+(0.49+0.51)+0.50
=1+1+……+1+0.50
=1×49+0.50
=49.50
=[(0.01+0.99)+(0.02+0.98)+…+(0.49+0.51)]+0.5
=(1+1+…+1)+0.5
=49+0.5
=49.5