Squaring Numbers ending in 3

Squaring Numbers ending in 3
To square the numbers ending in 3like 13, 23,33, 43..upto 93. there is an easy method let me explain with an example.

1^st example 13²

step 1 : Split the 2 digits of the number and square each digit to make the ones' place and 100th place respectively of the square
1²=1
3²=9
step 2 : multiply the tens digit of the number to be squared to 6 and it will be the tens digit of the square
here 1x4 =4
1 9
 6
---------
169
---------
so the square of 13 is 169.

2^nd example 43²
step 1 : Split the 2 digits of the number and square each digit to make the ones' place and 100th place respectively of the square
4²=16
3²=9
step 2 : multiply the tens digit of the number to be squared to 6 and it will be the tens digit of the square
here 4x6 =24
16  9
  24
-------------
1849
-------------
so 43²=1849