﻿ Square Root Calculator (√)

A number that is multiplied by itself to form a product is called a square root of that product. The operations of squaring and finding a square root are inverse operations.

Enter Number:

The square root is:

### Square Root Calculator

• Square root -  a number which, when multiplied by itself, produces the given number. (Ex. 7² = 49, 7 is the square root of 49)

By definition  Ö25  is the number you would multiply times itself to get 25 for an answer. Because we are familiar with multiplication, we know that Ö25 = 5 . Numbers like 25, which have whole numbers for their square roots, are called perfect squares

You need to memorize at least the first 15 perfect squares

Perfect square

A perfect square is a number whose positive square root is a whole number.

Square root

1

Ö1   =  1

4

Ö4   =  2

9

Ö9   =  3

16

Ö16   =  4

25

Ö25   =  5

36

Ö36   =  6

49

Ö49   =  7

64

Ö64   =  8

81

Ö81    =   9

100

Ö100   =  10

121

Ö121   =  11

144

Ö144   =  12

169

Ö169   =  13

196

Ö196   =  14

225

Ö225   =  15