4. February 2007

Graphical Multiplication

Most people aren’t that fond of mental arithmetic. There are ways though, how arithmetic can be more interesting. One of those is graphical multiplication:

Easy Graphical Multiplication Trick – video powered by Metacafe

According to the author of this video, the trick isn’t suited to speed up calculations – it’s merely about motivation.

It’s not a way to make mental multiplications easier, it’s just a fuuny way to resolve graphically a multiplication. It’s only meant to be a little trick to show to friends and kids who hate maths. It’s NOT meant to be efficient as some seems to think. You can do any kind of multiplication with it but yes it’s boring to draw numbers like 8 or 9.

Also interesting is the source of the trick:

My girlfriend learned it from some math teacher during her school years in china. He wanted to make kids interesed in maths and it worked.



» This article in German
» Discussion at Metacafe


  1. Nice concept. I love different methods to accomplish multiplication. There is a method on my blog at http://mathmojo.com/chronicles/2007/01/27/algorithm/ which is fun and also practical. I hope you’ll try it.

    Your site is really well designed. Great art.



    Comment by Brian — 6. February 2007 @ 18:33

  2. nice trick you got there!

    i personally have never liked math…but it’s always good to know this trick…


    Comment by funnyvideo! — 11. March 2008 @ 15:35

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