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Encapsulate
math
FrACtIONS

equal and Unequal Parts Fractions of a region

Halves Thirds Fourths

Two Two Three Three Four Four Two halves Three one- Four-fourths
unequal equal unequal equal unequal equal make a thirds make a make a
parts parts parts parts parts parts whole. whole. whole.

Writing Fractions

Number of parts being talked about
Fraction =
Total number of equal parts Numerator and denominator of a Fraction
Example: 2
Example: Numerator
9 Denominator
Number of pink parts 2
Total number of equal parts = 6
Fraction of a Collection
Fractions of a Collection using division

Half of a Collection: To find half of a collection, we divide
it by 2.
One-third of a Collection: To find one-third of a collection, Number of red kites 1
we divide it by 3. Example: Total number of kites = 3
One-fourth of a Collection: To find one-fourth of a Thus, of the kites are red.
1
collection, we divide it by 4. 3

Mental Maths

1. In the word 'DENOMINATOR', which fraction of the word represented by the
letter ‘N’?
2. What is the fraction of each colour in the rainbow given alongside?
3
3. Add 3 to numerator and 5 to denominator of a given fraction . What will
be the new fraction? 5

7
4. Multiply numerator by 3 and add 10 to the denominator of the given fraction . What
will be the new fraction? 16
5. Find:
1 1
(a) of one year = _____months (b) of an hour = _____ minutes
2 4
1
(c) of a dozen = _____ item (d) 1 of a score = _____ items (1 score = 20 items)
3 5

114 Mathematics-3