分数单位是的最小真分数是 ,最大真分数是 ,最小假分数是 ,最小的带分数是 .
12÷ ==== %= 折.
5: ==1.25=30÷ = %
1==3÷ = : = %= (填小数).
=2: =4÷ = %=0.4.
÷ =20: ==0.8= %= 折.