Mental Multiplication for Everyone




Mental Multiplication for Everyone

Welcome to The Treatise on Mental Multiplication by O. Franco, Computer Engineer and Math lover who created a method to memorize the entire multiplication table up to 99 × 99.

Mental math calculations can be performed more efficiently in base 100, that is, a 2-digit number is seen as a 1-digit entity. This requires memorizing a large number of multiplication facts of 2-digit numbers, such as 89×72=6408.

Memorizing 3321 multiplication facts can seem daunting and intimidating, but it can be approached efficiently. The main concept in the memorizing process of the multiplication table up to 99 × 99 is the strong relationship existing amongst all the multiplications facts themselves within the table. For example, the multiplication fact 85×83=7055 can be directly derived from 84×84=7056 by applying the algebraic shortcut 2.1 (part of the course content). From the multiplication fact 84×84=7056 we can also derive 86×82=7052, 87×81=7047, and so on. 84×84=7056 in turn can be easily calculated from 84×6=504 by applying the algebraic shortcut 1.0. Furthermore, a large set of multiplication facts can be derived from 84×6=504 directly. Just like these there are many examples in the multiplication table. 

The techniques outlined in this course are based extensively on Algebra. Because of this, it is highly recommended to have a solid knowledge of Elementary Algebra in order to fully understand the content of the course.

If you're a Mathematician, a Math lover or a Math teacher who needs to verify student calculations, this may be a very good course for you.

The content of this course was developed by Eng. Otto Franco, and the narrator in the videos is an excellent English teacher.

Well, thank you very much for listening and let's get started!

Method to Memorize the Multiplication Table up to 99 × 99.

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What you will learn
  • Method to memorize the 3321 multiplication facts of 2-digit numbers such as 79x62=4898.
  • Lose the fear of using memory by learning to use it.
  • Learn the proper way to memorize a large data set based on its structure and relationships.

Rating: 5

Level: All Levels

Duration: 2.5 hours

Instructor: Otto Franco


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