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加工一批零件,甲要6小时,乙要10小时,甲乙两人的工效的比是3:5. .
÷ = : =6:10=.可见,除法、比、分数是有联系的,除数相当于比的 ,相当于分数的 .所以,除法中除数、比的后项、分数的分母不能为 .但除法是 ,比表示 ,分数是 ,这是它们的区别.
6÷ =0.75= :12== %= 折.
差和减数的比是3:5,被减数是减数的 %.
=9: =0.6= %= 折.
=4: = ÷54= (填小数)
= ÷12=18: =2.25=1= %.
÷ ═==0.75= : .
= :24== %
12÷ =0.75= :32= :20= %= 折.
= %= :4=.
0.35== :20= %
÷0.8= :16==0.75= %
1÷ =0.125= :16== %
6÷ ==0.75= :40= %
:20==0.8=12÷ = %.
=0.375= ÷24= %
9÷ == :8=0.75= %= 折.
: =0.125= %==.
1﹣1× =0÷ == : =75%
÷15=0.8== %= 折.
== ÷20=6: = %= 折.
= :35=5:7= ÷21=.
:24=== ÷16= %
24÷ = :16=0.375== %.
÷4== :20= %= 折.
3÷5= = :40= %= 成.
5÷ = :16= %=0.625.
0.75= :16== %.
= ÷ = : = %= (小数)
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