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9÷ == :24=0.25= %.
2÷ === ÷10= %.
.
3÷( )= =15%= :40 圆周率是 与 的比值.
填上适当的数.= (小数)= %= ÷ = =× = =+ = ﹣.
32÷ == :8= %= (小数)
= %= ÷40=40: .
8÷ = :4=0.25== %== ÷45=3: = %==.
12÷16= :80=2.4: = %;2与它倒数的比是 .
(1) == %=4: = ÷25=四成(2)1.25= %== :8= ÷16=16: .
比例4﹕9=20﹕45写成分数形式是 = .根据比例的基本性质,写成乘法形式是 .
9÷ == :8== (填小数)
=2÷ = 成= %= 折= :50.
七六折= %== : .
= = ÷16= %.
3÷5=3: == ÷40= %
:5=0.8=20/ = %
÷16==15: = :24= (用小数表示)
÷8=12: =0.75== <填百分数>
:10=0.2= ÷25= %
3:8= ÷ =.
÷2== 折= %=0.75.
= : =27÷ =.
=12: =0.75= %
填上适当的数.7÷13= = ÷÷7= 9cm=dm.
: =40 =80%= ÷40.
25%=== :20= (填小数)
12: ==0.25= %= ÷24= 折.
÷ ==0.4= %= : .
÷5==0.8= %= : .
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