Page 116 - Math Genius C3

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Mind Map
math Creative Thinking
FRACTIONS

Equal and Unequal Parts Fractions of a Region

Halves Thirds Fourths

Two Two Three Three Four Four Two halves Three one- Four one-
unequal equal unequal equal collections collections
parts parts parts parts of unequal of equal make a thirds make a fourths make
number of number of whole. whole. a whole.
objects objects
Writing Fractions

Numerator and Denominator of a Fraction
Number of parts being talked about
Fraction =
Total number of equal parts 2
Example: Numerator
Example: 9 Denominator

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

Mental Maths Critical Thinking

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

7
4. Multiply the numerator by 3 and add 10 to the denominator of the given fraction .
What is 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 = _____ items (d) 1 of a score = _____ items (1 score = 20 items)
3 5

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