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7x7 = 49 | by HyperBob
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7x7 = 49

Russian multiplication

 

This is an old russian system for multiplying ANY numbers between 6 and 10.

 

The fingers are numbered starting with thumb 6 and ending with pinkie 10.

 

So to muntiply 7x7 you join the two index fingers (7) together and count the number of fingers below and including the two joined index fingers. This comes to 4 (two index fingers and two thumbs). You now add a zero on to this number to give you 40.

 

You now count the number of fingers above the joined index fingers. That is 3 on each hand and you multiply them together 3x3 = 9

 

Now you add both results together 40 + 9 = 49 = 7x7

 

This method works for multiplying ANY numbers between 6 and 10.

 

GET THOSE FINGERS WORKING AND CHECK IT OUT.

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Taken on January 19, 2005