Numerator and Denominator of a Fraction
What are the numerator and denominator of a fraction?
We have already learnt that a fraction is written with two numbers arranged one over the other and separated by a line. The number under the line shows in how many equal parts the whole has been divided into. It is called denominator of the fraction. The number above the line shows how many parts of the whole have been taken. It is called numerator of the fraction. So in 2/3, 2 is the numerator and 3 is the denominator.
Numerator and Denominator of a Fraction:
We can see that a fraction has two parts.
The number above the division line and the number below the division line. The number below the division line tells us into how many equal parts single or collection of object has been divided. We call it the Denominator. The number above the division line tells us how many of these equal parts have been taken from the whole. We call it the Numerator.
Read as 2 over 5 or two by five.
Questions on Numerator and Denominator of a Fraction:
I. Write the denominators and numerators
Fraction

Numerator

Denominator

\(\frac{5}{8}\)

_____

_____

\(\frac{1}{4}\)

_____

_____

\(\frac{6}{2}\)

_____

_____

\(\frac{2}{7}\)

_____

_____

\(\frac{4}{6}\)

_____

_____

\(\frac{2}{3}\)

_____

_____

II. Write the fractions
Fraction

Numerator

Denominator

2

3

_____

3

9

_____

5

8

_____

1

6

_____

7

15

_____

6

11

_____

III. Fill in the table 
Figure

(i)

(ii)

(iii)

(iv)

(v)

Shaded parts (Numerator)

___

___

___

___

___

Number of parts (Denominator)

___

___

___

___

___

Fraction of shaded parts

___

___

___

___

___

IV. Fill in the blanks _
(i) In \(\frac{10}{2}\) the numerator is _____ and the denominator is _____.
(ii) In \(\frac{9}{3}\) the denominator is _____ .
(iii) In \(\frac{10}{2}\) the numerator is _____ .
V. How many fractions have the numerator '6'?
\(\frac{6}{2}\), \(\frac{16}{2}\), \(\frac{3}{5}\), \(\frac{9}{3}\), \(\frac{6}{1}\)
VI. Write in fraction form 
(i) Numerator 30 and Denominator 5

....
____ ....

(ii) Numerator 9 and Denominator 54

....
____ ....

(iii) Numerator 15 and Denominator 30

....
____ ....

The number above the line is called the 'numerator' of the fraction and the number below the line is called the 'denominator' of the fraction.
For example, in fraction \(\frac{7}{12}\), 7 is the numerator and 12 is the denominator.
Also, in fraction \(\frac{3}{8}\), 3 is the numerator 8 is the denominator.
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