How to find the square of two digit number.

Easy trick for find square of two digits.

We take simple example of two number
(26)^2=..?
First of all,

We also know that square of 2&6.
Now
2  6
Square of 2 =  4
Square of 6 = 36

Now
We will take 2 as multiple because we are finding Square.
2×6×2 = 24

Then

    4 3 6
+  2 4
-------------------
    6 7 6
-------------------
We also leaving one digit from last
You can check square of  26^2= 676.