0.6米= 厘米; 4.2分米2= 米20.25升= 毫升; 2.75m3= dm3.
15÷ =62.5%= :16== (小数)
= ÷25=40%= :45.
24: == ÷1.2= 折=75%
= ×=36÷ = :13.5.
÷20=0.4= %=2: .