How to find Square of any number in seconds

In this lecture we are gonna learn about how to find square of any number.

Case 1. Finding the Square of any number ending with 5

let us understand with an example

Q. What is the square of 75?

Step1. 

First write down the square of 5 which is 25

Step2.

Now multiply the first digit of number to its next upcoming digit.

i.e. 7x8 = 56

Step3.

The answer to the question is 5625.

Pretty Easy, isn't it?

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Case 2. Finding the Square of any number less than 100

let us understand with an example

Q. What is the square of 98?

Step1.

Check how much is the difference between Given number and 100

here 100-98= 2

Now Square the difference 

2x2 = 04

we have to write the square in two digit number.

Step2.

Now subtract the difference from the number given in question.

98-2 = 96

Step3.

The answer to the question is 9604.

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Case 3. Finding the Square of any number greater than 100

take this with an example

Q. What is the square of 103?

Step1.

Check how much is the difference between Given number and 100

here 103-100 = 3

Square the difference

3x3 = 09

Step2.

Add the difference to the number given in question

103+9 = 112

Step3.

The answer to the question is 11209.

Now try it yourself.