Vedic Maths - Tutorial 1

[Suresh]

Vedic Maths - Tutorial 1

Use the formula ALL FROM 9 AND THE LAST FROM 10 to perform instant subtractions.

• For example 1000 - 357 = 643

  We simply take each figure in 357 from 9 and the last figure from 10.
  
  So the answer is 1000 - 357 = 643

  And thats all there is to it!

  This always works for subtractions from numbers consisting of a 1 followed by noughts: 100; 1000; 10,000 etc.
  

• Similarly 10,000 - 1049 = 8951
  
• For 1000 - 83, in which we have more zeros than figures in the numbers being subtracted, we simply suppose 83 is 083.

  So 1000 - 83 becomes 1000 - 083 = 917

http://vedicmaths.110mb.com/tutorial1.html

[Michael Paul Goldenberg]

Gee, on another list I'm on, we're up to Tutorial 6 of this useless intellectual spamming. As I pointed out there, empty tricks without any conceptual explanation as to the underlying mathematics that makes them work is an example of what has historically been wrong with so much of mathematics education. Teaching that mathematics is nothing but tricks and gimmicks to be memorized without understanding is NOT what we need. 

"Vedic maths" might be useful if it were being explored as an example of how to use place-value and simple algebraic reasoning to develop some alternate ways of doing mental math. But as something grounded in a bunch of mysticism, regardless of the cultural sources, it's fast becoming the Viagra and Cialis of mathematics education list-serves. And I, for one, would appreciate not getting this spam in my in-box every day. However, if past is prologue, we can expect no reply from the spammer other than day after day of vapid trickery with no attempt at actual mathematical thought whatsoever. 
Quoting Suresh <scgan...@gmail.com>:

> Vedic Maths - Tutorial 1 <http://vedicmaths.110mb.com/tutorial1.html>

>
>
> Use the formula ALL FROM 9 AND THE LAST FROM 10 to perform instant
> subtractions.
>

>    - For example *1000 - 357 = 643*

>
>    We simply take each figure in 357 from 9 and the last figure from 10.
>

>    So the answer is *1000 - 357 = 643*

>
>    And thats all there is to it!
>
>    This always works for subtractions from numbers consisting of a 1
>    followed by noughts: 100; 1000; 10,000 etc.

>    - Similarly *10,000 - 1049 = 8951*
>    - For 1000 - 83, in which we have more zeros than figures in the numbers

>    being subtracted, we simply suppose 83 is 083.
>

>    So *1000 - 83* becomes *1000 - 083 = 917*
>
> http://vedicmaths.110mb.com/tutorial1.html
>
> >
>

 

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Michael Paul Goldenberg
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mike...@umich.edu
Unashamedly an Ethical Humanist and Unapologetically a Liberal Ironist

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