# Square of a number ending with 1

Example: 31^{2}

Step 1: First step is to write 31 as 31+1. Obtain 30^{2} = 900.

Step 2: Add 30 to the given number 31. You will get 61.

Step 3: Add 61 to 900 to get the final answer 961

One more Example:

Let’s see how does the square of number which ends in 1 look like.

Let us consider a number which ends with 1. The number would look something like a1, where a can be any number.

Alternate Way:

The squares of any 2-digit number ending in 1 would be of the form a^{2} / 2a / 1.

Example 1: 121^{2}

Example 2: 71^{2}

## Comments (0)

## Facebook Comments