數學..百分數化分數..

1
--%=0.2%
5

1
--%
5
=0.2%
=(0.2x1)/100
=0.2/100
=2/1000
=1/500

%=1/100

1
--%
5
=0.2%(先把%化為小數)
=0.002(再把小數化為分數)
=2
--------(把分數約簡)
1000
=1
------
500
====

百分數化分數
1
--% =?
5

1/5=0.2%=0.002=1/500!!!
Too easy!!!

1
--%
5
=1/5%x1/100
=1/500

1%=1/100=0.01(or 1 )
------------------------100
so 1 %= 1% / 5 =0.01 / 5 =<0.002>
---5
so 1 % is 1% divided by 5
---5

2007-12-03 20:32:48 補充：
the answer should be 0.002 or 1----------------------------------------------500

1 over 5%=0.2%

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0.2

解釋:

擴分就可。即是例如:5-2=0.4。只要將分母倍大為10或100作分母。

計小數的話: 0.002
分數的話: 1 /500