甲:乙:(1)把甲看作单位“1”,则乙是甲的 .(2)把乙看作单位“1”,则甲是乙的 .
=6﹕ = %=0.6.
÷ == ==.
%== : = (写小数)
9:( )==3÷5=( )÷30=( )%= (填小数).
1÷8= (填百分数)=2: == (填小数).