Magical Squaring Technique For Numbers 11 to 19

Let us first find square of 11 using the formula: -

The formula is self-explanatory. However, let me explain it for more clarification: -

• Slash used here is just a separator.
• Our operating zone is 10 x 1 or simply 10.
• 11 is one more than 10.
• We added 1 to 11 to make it 12.
• Number of digits after the slash can be only one.
• If the number of digits after the slash exceeds one then we place only the right most digit after the slash and the remaining digits gets added to left hand side of the slash.

Will you be able to find squares of other numbers in a similar manner? Try.

You can work like this up to 19^2. What about numbers above 20?

Formula remains same with a slight change. The change you will appreciate..