The document explains the concept of square roots, specifically defining that the square root of a number is the value that, when multiplied by itself, gives that number. It identifies 25 and 49 as perfect squares with square roots of 5 and 7, respectively. Additionally, it provides a list of the first 15 perfect squares and their corresponding square roots.

1. An Introduction

2. By definition 25 is the number you would multiply times
itself to get 25 for an answer. In other words, what times
what would give you a product of 25?
Because we are familiar with multiplication, we know that
25 = 5, because 5 x 5 = 25. 5 is the square root of 25.
Numbers like 25 and 49, which have whole numbers for
their square roots, are called perfect squares. You
need to memorize at least the first 15 perfect squares.
By definition 49 is the number you would multiply times
itself to get 49 for an answer. In other words, what times
what would give you a product of 49?
Because we are familiar with multiplication, we know that
49 = 7, because 7 x 7 = 49. 7 is the square root of 49.

3.  What times itself is the number in the root
symbol?
 is 3 because 3 times 3 is 9
a
9

4. 
16

5.  is 4 because 4 times 4 is 16.
16

7. Perfect
square
Square root
1 1 = 1
4 4 = 2
9 9 = 3
16 16 = 4
25 25 = 5
36 36 = 6
49 49 = 7
64 64 = 8
81 81 = 9
100 100 = 10
121 121 = 11
144 144 = 12
169 169 = 13
196 196 = 14
225 225 = 15
Perfect
square
Square root