把4.723、4.273、42.73、42.37、47.23按从大到小的顺序排列下面各数. > > > > .
10: = =0.5=5÷ = %.
5÷ =25%= :40= = 折.
÷25== = (小数)= %= 成.
12: == :4=0.25= 折.
=2: =4÷ = %=0.2.