If you get 7 out of 10 in a test, you can write your score as ^{7}/_{10}.
7 expressed as a fraction of 10 is ^{7}/_{10}.
Similarly, if there are 20 socks in a drawer and 4 of them are blue, ^{4}/_{20} of the socks are blue.
So, 4 expressed as a fraction of 20 is ^{4}/_{20}. We can put this into its simplest form by dividing the top and bottom numbers by 4. So we get ^{1}/_{5}.
a) What fraction of the large shape is the small one?
b) What fraction of the small shape is the large one?
a) The small shape is ^{3}/_{10} of the large shape.
b) The large shape is ^{10}/_{3} or 3 ^{1}/_{3} of the small shape.
If you are expressing a number as a fraction of a second, the first number goes on the top and the second number on the bottom.
What fraction of 1 metre is 42cm? Give your answer in its simplest form.
42cm as a fraction of 100cm is ^{42}/_{100} = ^{21}/_{50}
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