Page 107 - Start Up Mathematics_4

8

Fractions

Let’s Recall ...

• A fraction is a part of a whole or a collection.

1 of a whole 1 of a collection
3 3
1
In the fraction , 1 is the numerator and 3 is the denominator. We name a fraction
3
by first saying the numerator followed by the ordinal name of the denominator. For
1 1
example, is read as one-third. The only exception is which is read as half. If the
3 2 2
numerator is greater than 1, add ‘s’ to the ordinal name. For example, is read as
5
two-fifths.
• To find:
1
(a) of a whole or a collection, divide by 2.
2
1
(b) of a whole or a collection, divide by 3.
3
1
(c) of a whole or a collection, divide by 4.
4

1 Colour the figures to show the given fractions.

1 4 3
(a) (b) (c)
4 6 6

2 Write the fraction shown by the shaded part.

(a) (b) (c)

3 Find:
1 1 1
(a) of 16 (b) of 51 (c) of 48
2 3 4
1 1 1
(d) of a score (e) of a year (in months) (f) of April (in days)
4 2 2

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