Finding the square of a number in using Vedic Maths Trick is easy. Just follow the below steps:

Step 1. Choose a base closer to the original number.
Step 2. Find the difference of the number from the base.
Step 3. Add the difference with the original number.
Step 4. Multiply the result with the base.
Step 5. Add the product of the square of the difference with the result of the above point.

(99) ² =?

Step 1. Choose 100 as base
Step 2. Difference: 99-100 = -1
Step 3. Add the number with the difference that you got in Step 2 = 99 + (-1) = 98
Step 4. Multiplying result with base = 98*100 = 9800
Step 5. Now, add result with the square of the difference= 9800 + (-1)² = 9801
So our answer is : (99) ² = 9801