Square root of a number
Before understanding what the square root of a number is, it is important to understand the meaning of root of a number.
The root of a number is an equal factor of the number
For example, find the root of 16
First, we need to factor 16
16 = 1 × 16
16 = 2 × 8
16 = 4 × 4
The root of 16 is 4 because 4 is the equal factor for 16
We call 4 the square root
4 is called square root because we have to square 4 or raise 4 to a power of 2 to get 16
Find the square root of 4
4 = 1 × 4
4 = 2 × 2
The equal factor is 2, so 2 is the square root of 4
Find the square root of 64
64 = 1 × 64
64 = 2 × 32
64 = 4 × 16
68 = 8 × 8
The equal factor is 8, so the square of 64 is 8
For the numbers above, the square was equal to a whole number.
it is not always possible to get the square root as a whole number.
Sometimes, you may get a real number when finding the square root.
For example, use the square root calculator below to find the square root of 5
The result includes lots of numbers after the decimal point.
Check out this square root calculator
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for any number that is not
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Get it here: square roots table
Sep 11, 17 05:06 PM
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