3的分数单位是 ,再去掉 个这样的分数单位为最小的质数.
=6﹕ = %=0.6.
÷ == ==.
%== : = (写小数)
9:( )==3÷5=( )÷30=( )%= (填小数).
1÷8= (填百分数)=2: == (填小数).