Skip to collection list
Skip to video grid
Mental Math Secrets
09 - Mental Math Secrets! - Rapidly Square Numbers in the 50s!
Get the full course at http://www.MathTutorDVD.com.
In this lesson you will learn how to square any number in the 50s in your head without a calculator! For example 56x56 or 59x59. Its very easy to do and only takes a second to learn.