[geeks] I know this wasn't taught in American schools...

[Phil Stracchino]

On 01/07/11 02:34, Michael C. Vergallen wrote:
> On 06/01/11 02:48, Jonathan J. M. Katz wrote:
>> I saw this earlier today and was stunned. A pretty simple/easy way to
>> perform multiplication.
>>
>> http://www.youtube.com/watch?v=e-P5RGdjICo
>>
> Yep that is quite amazing how simple it is .... will teach that 
> technique to my nephew.

It looks slow and unwieldy to me, even with only three-digit numbers.
It's sort of like counting on your fingers, except with paper.

It's also not a Japanese technique, it's "Vedic mathematics", which
apparently aren't actually demonstrably Vedic:

http://en.wikipedia.org/wiki/Bharati_Krishna_Tirtha%27s_Vedic_mathematics

The article notes that some of these techniques work only with numbers
that contain only certain digits or factors.


-- 
  Phil Stracchino, CDK#2     DoD#299792458     ICBM: 43.5607, -71.355
  alaric at caerllewys.net   alaric at metrocast.net   phil at co.ordinate.org
         Renaissance Man, Unix ronin, Perl hacker, Free Stater
                 It's not the years, it's the mileage.