For example, 4 and -4 are the square roots of 16. The formula to represent the square root is given below:
Maths Tricks for Square Roots
There are different methods and tricks to find the square root of a number. They are:
- Using Long Division Method
- The square root of perfect squares using the prime factorisation method
- Approximation of square root of a number for not a perfect square numbers.
Here, the easiest method trick to find the square root of a number is given below:
In order to calculate the square root, we first need to find the factors of a given number, then group the common factor together. Group the pairs separately if the factors have any perfect square. The square root of the square of a number is the number itself.
For example, the number 36 The factors of 36 is given as 6 x 6. Since it is a perfect square, its square root is 6.
What is the square root of 144?
The factors of 144 are given as,
144 = 12×12
What is the square root of 80?
The factors of 80 are given as,