将8.081、8.018、0.808、0.108、0.818五个数从大到小排列,排在第四个的是 .
:30== %=六成= ÷40.
40:25=8: = %
21÷ ==14: =87.5%.
小数=6:5==36÷ = %
÷25= :8=27÷ =3.