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÷16== : == [最后一个空填小数].
30÷12==5: = :6= (小数)
12:10==60÷ = (填小数)
.
=15÷ = ÷30=七五折= %
12: == : = :12.
=0.25==27÷ = ÷48.
18÷ = ÷25=0.6==.
0.75= :28== %=24÷ .
3:5==15÷ = ÷75= (填小数)
0.4= : == %= ÷30.
:20==24÷ =80%= 成.
= ÷56=75%== 小数.
:8=0.75 8: =0.5.
6:10=12: == ÷40= (填小数)= %
= ÷8=0.125= %=5: .
÷ =0.6= :15= %= 折.
%=0.25= ÷16= :32.
=24÷ = %=二成= 折.
2=2=40÷( )==9÷( )
1=.
===12÷ .
一本书降价l5%,可以理解为 比 少15%,把 看作单位“1”,降价前与降价后的价格的比是 : .
= ÷ = %= (填小数)
=0.8==16÷( )=从左到右依次是 .
=0.75= ÷12=1.8: = :24.
比的前项是0.4,比值是,则比的后项是 .
= :24=0.625=20÷ = .
:32===6÷ = .
: =0.25= ÷16= %==.
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