The document explains the concept of square numbers, which are whole numbers that result from squaring an integer, such as 1, 4, 9, and 16. It illustrates how to find square roots, including methods for simplifying square roots of larger perfect squares, such as √256. Examples such as 4 as the square root of 16 and 5 as the square root of 25 are provided.

1. Square Roots
PERFECT SQUARES

2. Square Number
 Also called a “perfect square”
 A number that is the square of a whole number.
 Can be represented by arranging objects in a square.

3. Square Number

4. Square Number
 1*1=1
 2*2=4
 3*3=9
 4*4=16

5. Square Number
 The large square has an area of 4cm*4cm=16cm².
 The number 4 is called the square root of 16. 4cm
 We write: 4=√16
4cm 16cm²

6. Square Number
 A number which, when multiplied by itself, results in another
number.
 Ex: 5 is the square root of 25.
 5 =√25

7. Finding Square Roots
 We can use the following strategy to find a square root of
a large number.
√4×9 = √4×√9
√36 = 2×3
6 = 6
 We can factor large perfect squares into smaller perfect
squares to simplify.

8. Finding Square Roots
Finding the square root of 256
 √256
= √4 × √64
= 2 × 8
=16