Imagine that there are 10 questions in a test and you get 7 of them correct. You would say that you got . Because 7 as a fraction of 10 is
In the same way, 4 as a fraction of 12 is
or and 20 as a fraction of 48 is or .
Easy? Yes, but just be careful with the units.
For example, 20p as a fraction of £20 is not
, but (because £20 = 2000p).
Similarly, 30cm as a fraction of 5m is (because ).
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