Skip to collection list
Skip to video grid
Mental Math Secrets
14 - Mental Math Secrets! - Rapidly Multiply 3-digit by 2-digit Numbers!
This is just a few minutes of a complete course.
Get full lessons & more subjects at: http://www.MathTutorDVD.com.
Learn how to multiply 312x29 and similar problems rapidly in your head without the use of a calculator.