$$ \frac{1}{2} $$ of 20 = - 

10

$$ \frac{1}{2} $$ of 18 = - 

9

$$ \frac{1}{2} $$ of 12 = - 

6

$$ \frac{1}{2} $$ of 16 = - 

8

$$ \frac{1}{2} $$ of 14 = - 

7

Double 4 = 8 - 

Half of 8 = 4

Double 7 = 14 - 

Half of 14 = 7

Double 5 = 10 - 

Half of 10 = 5

Double 10 = 20 - 

Half of 20 = 10

Whole - 

20

$$ \frac{1}{4} $$ - 

5

$$ \frac{3}{4} $$ - 

15

$$ \frac{1}{4} $$ is - 

3

$$ \frac{2}{4} $$ is - 

6

$$ \frac{3}{4} $$ is - 

9

$$ \frac{4}{4} $$ is - 

12

A - 

$$ \frac{3}{4} $$

B - 

$$ \frac{2}{4} $$

C - 

$$ \frac{1}{4} $$

D - 

$$ \frac{4}{4} $$

$$ \frac{1}{4} $$ of 12 = - 

3

$$ \frac{2}{4} $$ of 12 = - 

6

$$ \frac{3}{4} $$ of 12 = - 

9

$$ \frac{4}{4} $$ of 12 = - 

12