Square Numbers

Watch the video for an introduction to Perfect Square Numbers.

A square number is the result when a number is multiplied by itself.

For example 4 x 4 = 16

Another way to write 4 x 4 is 4² which is also called four squared. That small '2' is called an exponent.

Therefore 4²= 16

Any whole number multiplied by itself will result in a perfect square.

For example, 9 is a perfect square because 9 = 3 x 3 or 3².

25 is a perfect square because 25 is the same as 5 x 5 or 5².

One way to to represent a square number is to use a number of objects to form a square.

Can the objects on the right be rearranged to form a square?

There are 9 objects so they CAN be formed into a square. This confirms that 9 is a perfect square.

Square Numbers Song - To Memorize Some Square Numbers

Report abuse