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11/26/2006

How to: Easy Mental Multiplication

Though not the latest in technology or gadgetry, this video tutorial on "easy mental multiplication" is quite interesting to say the least and may help out those who number crunch for a living. What are your thoughts on this technique? Video after the jump. (Thanks David, P)

This entry was posted on 11/26/2006 04:57am and is filed under Science, Video .
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There are 14 comments about this post (1 pages).

1
Posted at 11/26/2006 07:45am by Cabe
I believe that is called Russian multiplication
2
Posted at 11/26/2006 07:49am by JE
its possible to do it easily with tthe same speed using the normal method if you have to do it on a pen and paper anyway.
3
Posted at 11/26/2006 08:10am by steve
i agree with Cabe.
4
Posted at 11/26/2006 08:51am by Mizan
long multipiclation is better
5
Posted at 11/26/2006 08:59am by JooNkeN
uhhh... that's the exact same way how you do normal multiplication, except that it's visual representation has been altered. 123 x 321 ------- 123 246 +369 ------- 39483 But hey, everybody has their own way of doing things. Maybe this way is better for some.
6
Posted at 11/26/2006 09:02am by JooNkeN
Looks like the equation got messed up due to using empty spaces; how's this? ___123 x__321 --------- ___123 __246 +369 --------- _39483
7
Posted at 11/26/2006 1:03pm by Ian
it's very situational too, its gets tredious once u have to draw lines for digits higher than 3
8
Posted at 11/26/2006 2:14pm by David
Works well for ppl like me who have a math related learning disablility. Just draw it in your head and count the crossing lines. This will be very useful :D
9
Posted at 11/26/2006 11:57pm by PeterJ
Checkout http://www.metacafe.com/watch/315070/cool_mathtrick_really_fast_multiplication/ for a truly "mental" trick.
10
Posted at 11/27/2006 01:04am by calgeiser
well, its interesting to say the least. ill show this to my precalc teacher and see what she has to say.
11
Posted at 11/27/2006 2:08pm by Techamo » 2day’s How-To: Do Easy Mental Multiplication
[...] [via Techeblog] [...]
12
Posted at 11/28/2006 00:06am by james
seems to be very useful but i think that im going to stick with an arrangement of points or particles or objects in a regular periodic pattern
13
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14
Posted at 12/24/2006 04:26am by goober
svabodu belarusii I cogitating it worked out whole, his dam said. Leena ki ukhadi saans thodi shaant huyi tab boli, ha, phalli baar pi svabodu belarusii hun.
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