- Square root
A square number if expressed as the product of two equal numbers, then one of the
equal numbers is said to be the square root of the given number.
Eg. : 16 = 4 ×^4
In the above example, since 16 can be expressed as the product of two equal numbers,
namely 4, then 4 is the square root of 16.
The process of finding the square root of a number may be explained to the child with
the help of an abacus.
Generally, if the square root of a particular number is asked than the positive root
alone is to be mentioned.
The child must be clearly explained that any square number will be having two square
roots, equal in magnitude but different in sign.
- Cube number
If a number can be expressed as the product of three equal numbers, then the given
number is said to be a cube number.
Eg. : 8 = 2 × 2 × 2
27 = 3 × 3 × 3
Since 8, 27, etc., can be expressed as the product of three equal numbers they are
cube numbers.
The idea of a cube number may be explained through demonstration.
- Cube root
When a cube number is expressed as the product of three equal numbers then one of
the equal numbers is said to be the cube root of the given number.
