Easy Graphical Multiplication Trick

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.

I didn't invented it but i would proud to because it's simple esthetic way to show the basic mechanism of a multiplication. You need to be quite clever to make this kind of 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. (In some china school, kids use stools to sit. That why he used this comparison for the shape of the network).

For all those who talk crap about this video: This one of the highest ranked of the week and one of the biggest gain of the producer program in such short time. I made 2000$ in 4 days. If you're so good to put disdainful comments, why don't you make a better vid instead of wasting text here ?

For those who enjoyed it, keep having fun! :) (new video coming soon)

4 telling me this trick i caN JUST USE THE TRICK WHEN MULTIPLICATINg

Thats very useful trick i like it man great job

Instead of you all being such a "good" critics and insult this guy, you should praise him for showing all of us (at least the ones that didn't know that method) a curious way of multiplying.
Yes i know it is faster using a calculator, and yes, it is probably faster doing it the old fashioned way with pen and paper. But at least its a different way of multiplying.

Here are my 5 cents.

why don't you just accept it as being a cool way of thinking about multiplication? Mental maths is one of the things i excel at, and i wouldn't use this, but it's a fun and interesting way, and i think it deserves a good rating. It's not about what the best way is, it's about the different approaches you can take to things

very good!

Crazy jedi mind tricks

that's the explanation i was given when i learned the trick.

Thats Extremely good.. but I only saw evens and odds together.. like Example: 23 x 26.. and something like 321 x 123.. I mean, does it work the same if its unpaired.. example: 145 x 13.. Do u understand what im saying...

I like this method, however I have come across one that I cant figure out how it works. 18 x 56 does not come out right, not sure why? Any ideas?

i am so shocked you are really genuis and very intellegent i have just try for it in defferent numbers and the formula is working perfectly

amazing

5 star nice dude

lol yea do that XD ........o wait i have a calculator =)

thanks for this i can use this in my maths exam :)

i didnt quite get understand it but im interested and im gonna look into it

It's great for the people who can't do, or it is hard for them to do mental math(this includes me). When you don't have a calculator this is just another way. Even though you would have to have great memory skills to be able to remember where to count your first intersections and such. But non-the-less it is still an interesting way to solve those annoying multiplication problems. :]

I like it

but wouldn´t be faster to do the multiplication as usual .

when im bored in math class i'll do that instead of boring write out problems. just wtf is up with ur nine? it looks like a g.

that its a girl not a boy

this guy earned more than $7,000 and u guys r callin him an idiot? maybe u need to reconsider who the idiot is

That's awesome - not very practical, but high nifty factor

it s amusing,ahah

ab * cd = (10*a b) * (10*c d) =
= 10*a*10*c 10*a*d 10*b*c b*d =
=100*(a*c) 10*(a*d b*c) b*d

All crosses is multiplies. You only make 4 multiplications (number of dots).

Same parts in case of 123*321.

i hope your "new one coming" don't be the rusian method 1(multiplication using division), the russian method 2(using fingers to multiply numbers from 6 to 10) or the arabig method for doing multiplication graphically

she paint so well

nice parlor trick to show to the friends

but i tend to use calculator... or a mobile phone on gmat test...

drawing 1234587964515 X 21358753982587=?

I rather use a calculator..

do it 99999x9999 and see wat u draw

Big props to you bro. Makes life a bit easier eh - so long as you've got paper and pen. Bugger if it's in your head.
I'm gonna have to try this one out next time.

than buying an asian kid.......how?

guys..any body can tell me from where i should start put the DOTs? tks a lot

It seems there should be sound with this, but I'm not getting any.,

Long Multiplication is quicker, easier and doesn't cost a fortune in pencils.

especially when you have large numbers like 12345...

it could help to make fun an arithmetic class for my son

the usual way is easier and takes less time. Glad to see a different way though

The crossing points are just multiplication, but through counting. It's way faster to multiply than to count, and you actually end up doing exactly the same thing, but perhaps in a slightly different order.

Just draw 1 line each time, but with a number attached to it, draw the little arcs, and then multiply the crossings. Same thing...

u only can do it ,if it 1 in the end of whole number. for example 31, 321, 71. and watch my video( new formula of mathematic> search:mathematic)

Try 24 x 35

incase you forgot to bring your calculator

321 x 123 =
I would multiply 321 x 100 = 32100
then multiply 321 x 20 = 6420
then 321 x 3 = 963
then add them all together 32100 + 6420 +321 = 39483

Interesting!! ...

if only u can find that trick, before they found calculator...

ok, n now, where's my calculator...?

the solution is interesting .But there will be a certain of points to count...?...haha

I guess Every Problem has a Solution in itself!!! :)

Well that makes sense but how about the weird number 9, who can explain that? http://www.metacafe.com/watch/704894/the_best_math_trick_ever/

very nice but missed out on something, http://www.metacafe.com/watch/609924/sweet_kick/

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it works with 1,2and3 only :-D

que crack

Well done. There's another cool trick here. Check it out... http://www.metacafe.com/watch/476990/derivation_of_cube_roots_from_any_perfect_cube/

http://www.metacafe.com/watch/332976/great_math_trick_with_number_6/

Thats cool technique, but it does get complicated for larger multiplication
there is good technique for squaring large numbers you can view it on..
http://www.metacafe.com/watch/454399/speed_calculations_squaring_large_numbers/

Cool graphics. But impractical to use for larger digits

Check out this funny prank : http://www.metacafe.com/watch/452926/funny_prank_vanishing_desktop_icons/

http://www.metacafe.com/watch/441990/cool_math_trick/

great man how do you know about this?

That method is like methods of multiplication used in computer science, for instance ALU in CPUs.
Cool :)

i tried with other numbers (ex:6789...)
and it worked
ex 585x3=1755
5x3=15
8x3=24
5x3=15

HOW DUMB CAN ANYONE BE?? frankly speaking... if you start to draw in ur maths exam, you will fail coz you dont have enough time to finish it. Why is multiply symbol is "x"? coz its is all crosses... know you know how calculus think of all these thing up hundred of years ago? in short, do more exercise, dont let your brain rusts, you will be more familiar with even 5 digit multiplication... do in ur tiny little brain. i hope there will be another video clip teach you how to add 1 1 = 2... So you go to college to learn - X / eh?

_______
321
642
963
= 39483
aint that much easer than all dat

use a calculator. ........ this isnt mental btw. in mental sums etc. u arent allowed to write anything except the answers so.... thats considered working =)

I prefer the common method of multiplication. Uses less paper and less time. Less margin of error, too...it could be simple to draw the arc in the wrong spot in this method shown.

I checked with larger numbers and it works. Yet didn't took the time to compare which one is faster, this method or regular multiplication as taught in school.

this may have been useful for the chinese when they invented papyrus, but we invented the calculator to do this S**t for us, its a neat trick, but boring as F**k , so.... buy a calculator instead, u'll save money instead of having to buy paper and pens.

it relys very heavly on drawing a picture... hence not mental!

nothing interesting

I'm usually not rating videos, but this time it would be stupid not to rate it as excellent!

The man who discovered this should be given a nobel price. Someone understanding how this trick is possible? Please explain if you can!

why dont you try multiplication you learnt at school ...

use calculator is much more faster right...

THANKS!!!!!!!

use calculator ya

stupid..why dont use calculator

ABSOLUTELY BRILLIANT. THIS IS THE KIND OF STUFF I APPRECIATE. GOOD WORK!!!!

that is F**king retarded. takes forever, i rather do the old fashioned way. not only does it actually prove u know how, rather than doing this bogus way, its also faster.

so 1) its faster, and 2) it shows u know how.

i was trying to do this in school today in math didnt realy work with like 29x24 bc its a uneven square if i did somthing wrong tell me

and less complicated

I don't mean to multply them by using calculator

Amazing indeed

AND THIS WHOLE TIME IVE BEEN USING A " CALCULATOR "

if you try using higher numbers like 7, 8 and 9. For 1, 2 and 3 there aren't so many lines.

BUY A CALCULATOR! !!!!!!

I'd work that problem out by hand the normal way even faster than that

Check this out http://www.metacafe.com/watch/440644/hard_multiplication_made_easy/

This one is even easier: http://www.metacafe.com/watch/328038/amazing_multiplication_trick/

I think we have calculators for a reason!!! :S

well that wazz funny you know so that o.k.
well check it out yo!!!!!! :]

Yo there is this crazy thing I don't know if you've heard of it. But there is a couple out on market. It's called....... hold on let me think.....Oh Yea! THE CALCULATOR!!!

That's why calculators were invented..so we don't have to draw on pieces of paper for days trying to figure out a stupid math question..

What the F**k , why does this damn video hav 7000 dollars worth of views. almost 1.5 mil people. i watched this and had to turn it off half way through, u can work it out faster any othe way. Regular methoud of just multiplication works fine for me. This guy doesnt deserve 7000 dollars for drawing lines. Its not like he invented this metod anyway.

Imagine multiplying 989 * 8789 - lines and points everywhere.

Me I think it's probably easier on an hp12c, don't you?

impresive... but y dont u only use a calculator or do it normal ... its faster and easier

STONE AGE

It's called a calculator people, since we're not in grade 5 any more your allowed to use it.

ive got a good feeling im gonna earn good salary making sh**ty videos for 4G's...im gonna quit my waiter job..

Unless you are in 1st grade and can't multiply, this is totally a waste of time, it takes 4 times longer than doing it the normal way. you won't look like an idiot drawing lots of lines together.