How To Multiply Numbers And Algebra Equations By Drawing Lines

Some people say this is “how the Japanese multiply.” Others say this is “Vedic Math.” I’m not sure of the origin, but this is a visual way to multiply two numbers and it does work. The video also shows how to use the same method to multiply algebraic expressions like (x + 2)(x + 3).

Here’s a blog post I wrote on this: http://mindyourdecisions.com/blog/2012/01/27/multiplicating-with-lines-math-trick-how-it-works/

Many people asked me to write a reference guide. So I wrote a book “Multiply Numbers By Drawing Lines.” https://www.amazon.com/gp/product/1500866148/

I’ve made a few follow-up videos you might like.

Multiply by lines (advanced examples)

Multiply by lines (why it works)

Multiply by lines (the rotation trick)

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