Page 110 - Revised Maths Wisdom Class - 3

108 MATHS

COGNITIVE

MAP

Fractions Type
Meaning
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“It is a part of whole”
or
“A part of collection” Proper Fraction

When numerator is less than denominator
Structure e.g. 4 , 2 , 9

Numerator (N) 5 3 10
Fraction = Improper Fraction
Denominator (D)
Numerator Number of parts counted When numerator is greater than denominator
Denominator Number of total parts 5 9 15
e.g. , ,
4 7 8
Unit Fraction
Identification
Fraction with numerator ‘1’
1
1 1
Fraction of shaded portion = 2 e.g. , , 1
1 5 4 9
Fraction of unshaded portion = 2 Like Fractions

Fractions with same denominator
2
Fraction of shaded portion = 1 4 7
3 e.g. 5 , 5 , 5
1
Fraction of unshaded portion =
3 Unlike Fractions
Fractions with diff erent denominator
1
Fraction of shaded portion =
4 e.g. 1 , 4 , 3
3 3 5 7
Fraction of unshaded portion =
4

Comparison of Like Fractions

When denominators of given fractions are same then fraction with greater numerator is bigger.
3 2 1 3 2 1
e.g. , , then > >
4 4 4 4 4 4