This tricks will teach you how to calculate in mind the square product of a two-digit number ending with 5, such as 15^2, 25^2, 35^2, etc.
Daily Archives: March 12, 2014
2 posts
Do you know how to multiply a number by 11 without using a piece of paper and a pen? This math trick will teach you a simple, easy, and fast way to do the multiplication.