Squaring a number that ends in 50 is very easy.

This method can be applied to any number which is onn either direction of 50, i.e. 55, 52, 47, …., 59 and so on.

Let’s explore this with an example:

54^{2} ** → **5

^{2}+4 / 4

^{2}

**29 / 16**

*→*

*→ 2916***For numbers greater than 50**

*The result is comprised of two “parts”*

*The bottom “part” is always the bottom digit squared*

*The top “part” is the top digit squared plus the bottom digit*

53^{2} ** → **25+3 / 9

**28 / 9**

*→*

*→ 2809*** ****For numbers less than 50**

* **The result is comprised of two “parts”*

*The bottom “part” is always the bar of the bottom digit squared*

*The top “part” is the top digit squared minus*

*the bar of the bottom digit*

48^{2} ** → **25-2 / 22

*→***/ 4**

*23*

*→ 2304*46^{2} ** → **25-4 / 16

**21 / 16**

*→*

*→ 2116*