按从小到大的顺序排列下面各数: .1.82 1.28 0.821 1.028 1.802.
20: = ÷20==0.8= %
==36÷ = (填小数)
18: =0.25= %= ÷24=.
2.5==50÷ = ÷50.
6: = %=0.25= ÷48= (填分数)