New Math Multiplication Method

[Ahmetron]

What if you were to calculate 99x99. Im not drawing 36 lines to do a simple calculation.

[TheDaamos]

2113! COHEED AND CAMBRIA

[Swisrya]

Impressive! I wonder about the 0, though.

[jannarith]

not if the answer had zero but one of the numbers you were using had a 0 in it

[Palunon]

@jannarith You draw 0 line, and count 0 intersections. You can also use a different color not to forget to use the 0-intersection in the groups separations.

[rudge1982]

I thought you had to add the 4 to 8 also.

[WereVjiaoBlack]

Guys, you get a zero by adding the intersection points and getting 10.

If you do 2 * 5, for example, there would be ten intersection points, hence a one and a zero.

[fritoman182]

This is the same thing as distribution but showed in a graphical manner.

[festus626]

I believe that's why calculators were invented???

[youlovemathematics]

Mathematics is easy if you have a good teacher. On my channel (Youlovemathematics) I will teach you everything about math step by step. I will start with teaching you (necessary basic math skills) and then I will teach you the more advanced math topics. Just click on Playlists when you are on my channel and you will be able to watch my math videos in order. I promise that i will teach everything in an easy way.

[asmatokiohotel]

oh nice xD I've never heard of that before

[TheQtip972]

Do you really need this method, seems to me like you're a retard if you need it.

[m1zzm0ni3]

We need VOICE!!!

[anneschoice]

Whats this method called?

[anneschoice]

Thanx for it helped me understand but i was stuck and i had to figure the 2nd one myself so my advice is it would be more useful if you talked.(:

[JJboy1992]

You draw your 9's retarted.

[PrimalLight2323]

@JJboy1992 You spell "retarded" like a jackass.

[JJboy1992]

@PrimalLight2323 So does your mum but she doesn't complain when I do her. Get yourself together Broseph.

[MyHamza111]

this is good

[kiigo1000]

that's going to help me in my exam's in 2 months

[mattdarkslide]

i keep trying 56 x 34 but i can never get it right. ive done other combinations and they work but i still havnt got this one right. any help?

[Deliveryboy09]

Try 300x19.

[RAWBERRY14]

This method is mostly only useful for those who don't know their basic times tables, and is extremely tedious when performing problems with larger numbers. (ie. 999 x 999) While it is still possible using this method it requires about half a page of paper if used efficiently.

[RAWBERRY14]

To all of those complaining about 0's use dotted lines, or simply another type of line which you can distinguish as 0, and then anytime you come across a dotted line, know that the number will be 0, because 0 x # is equal to 0.

[iamadamsusername]

thank god im not in school anymore!!

[iqon97]

what if the number had a decimal plac

[crazyclown37]

it would be alot easier just to do 23xd32

[DoraAnderson]

I think I'll stick with the old fashioned way!

And like someone asked, how do you get a ZERO? Like if the answer was 203 instead of 213.

[Ichthus91]

I use a dotted/dashed line for zero. Anything through that dotted/dashed line isn't counted.

[SUJUfighting100]

@DoraAnderson you could get a zero if there is no dot on the line

[goftam09]

wohooooo...amazing

[twylightsky2007]

not bad till you start getting into numbers higher then 3. then there are so many lines to count it's burdensome.

[Ichthus91]

I draw one line for each digit and put the number next to it. The number of dots at the cross section would be this times that... so I write that number next to the dot.

[jbrentoniv]

That's really cool. I just tried some 3 digit multiplication and although he didn't show it, you need to keep bringing the digit in the tens place over until the last corner.  I'm going to try a four digit multiplication now...but this is very cool. thanks.

[jjv236]

how do u do a line for 0?

[bpd777]

you dont?

[headdezees]

are u japanese?

[TomekTQ]

Interesting, if a bit unwieldy.

[zebralionn]

THAT IS SO COOL!!!!

[h0lydoctor]

Hey losers,

take it with a pinch of salt. he is showing something interesting, not necessary something feasible.

Get some life losers

[RaceMithNev]

try 25x25... this method sais 525 not 625

[RaceMithNev]

nm my faut :D

can't count to 20 rofl

its right

but I'm not gona waste time on 999x999 :D

[Ichthus91]

998001. The numbers you get from left to right are: 81,162, 243, 162, 81 Right to Left: Carry the 8 to 162 to make it 170. Carry the 7 to 243 to make 250. Save the 1. Carry the 5 to 162 to make 167. Save the 2. Carry the 6 to 81 to make 87. Save the 1. You get 877001 with the left over digits. Add 121 (saved digits) to the high-end digit placing, the 877. You get 998001.

[WarFact]

I used this on my calc final when I had to multiply a 4 digit number and my professor thought i was a genius lol

[binhan112]

hey yhis is realy cool thanks that jou learnt me guz i am only 10 cool thanks and it is funny xd Lol thanks thanks

[tomasdiazdavila]

Cool! Now do 98988 x 78987. You will have a mess of lines. A traditional method will work better in such case. Interesting way of grouping visual clusters of dots multiplying thoug

[ihateuutube]

or even 96 x 78, anything with large digits is very hard to do using this. his examples used only digits 1-3.

[Ichthus91]

Just draw one line for each digit place and write the number next to it. The cross section where the two lines meet will be this times that. I write that number down on that dot respectfully.

[theEmpress13]

...

How do you know where to break up the lines? =_=

[VedgeNeWi]

This is retarded. Not exercising any actual mathematical skill. The user should be exercising their brain, using basic multiplication they should know, not relying on a picture to show the answer. Though it is a clever way to find a solution, it's far from easier, and does not make anyone smarter. FAIL

[jjsoft08]

Long Live Visual Kinaesthetic Learning!

JJsoft

[pacoboy91]

it tried it on bigger numbers and it works.its simple its just what you do when you multiply larger numbers by hand. but it looks cool if you can beat someone doing by hand on larger numbers

[ronmc2]

Great! It only took him 40 seconds to do the first problem & 1:30 to do the second problem. The old method took me 15 seconds & 30 seconds, respectively, to do the same math problems. Our tax dollars hard at work, to fix something that wasn't broken.

[Tracker99292]

you're a great example of why the tax dollars are being wasted.

1) it's not a replacement, it's simpley an interesting way of representing the equations.. the only reason it doesnt' work beyond two numbers is because of the intricacy of a 3-d drawing.

2) Chinese person in singapore, not necessarily anything to do with the U.S

[Ichthus91]

It does work beyond 2 numbers if you know how.

[Barttoocool]

wat the fuck i dont get that

[ldotinnocent]

LOL some art class in a maths exam

[nightgamer360]

why this works so great is the bigger the diggit number the less adding operations (less caryovers). round off each place value another larger example 832x324=269568

832x300=249600

832x20=16640

832x4=3328

249600+16640+3328=269568

[nightgamer360]

lol way overcomplex guy

simply break down the 2nd number rounding off each place value and add the results

21x10=210

21x3=63

21+210=273

21x13=273

[ambruno1132]

Why no examples with digits of 6 or more?

Makes the math teacher in my suspicious.

[nickhead2]

thats cute.

It's really simple, you just break up the digits of each number

[dizzee14]

Fukin nerd

[wooshmeepfook]

what if the number of digits aren't equal? ex. 21x221 or if you add 0? and what if you're trying to solve 10869 x 5 ?

(I figured it out btw)

[TuRk1y3]

sweet!

[jeanotho]

thanks ROCKYFP !!! GOD BLESS YOU SO MUCH !!!

[lixyed]

oO'

[K0y0t33]

babycody1 - u don't have to use 0, but break them up like this: 10 1 and 10 1, line them out, count and you get 10201.

[Drgon90]

cooooooooooooooooooooooool

[Chris0825]

Oo by the way, I just tried it. It would only work for some equations, it doesn't work for all of them.

[Chris0825]

What if it was a 2 instead of a 1 there. Would you still add the 2 over? or can it only work for number one?

[Dariusdagr8]

Thats the Indian kerala school of doing maths :) Mallus are bloody smart buggers.

[denito9474]

its originally looks a lot more radical than it is. But it still has to be essentially the same process otherwise it would not give the same answer. What's cool is that is a different way of conceptualising such a simple old concept as multiplication. Which is where lots of maths brerakthroughs are made. cartesian plane for example.

[koolkleankat]

xD WOW THATS niiceee

[babycody1]

So many critics of a neat "trick". Reminds me of the multiplication by 9s trick. I was wondering how you would use this for numbers with zeros? i.e. 101x101 You can't draw a zero. Oh and yes it does work for 21x31. You have to pay attention to how the lines get grouped. Left then center then right.

[CueCue]

does this only work if the last number of the first set, is the first number of the second set? (Like, 21 x 13) because i tried 21 x 31, and that didn't work. Perhaps i did something wrong?

[sezzystick]

im not seeing it ??? :S

[noppe102]

Nice, just did 222x222 in the head, just imagining this system, kinda cool :O

[Truthiness231]

Eh.. it looks neat, though it's nothing more than another way to look at numbers, and ultimately the original algorithms ("math methods") are still superior. In fact, methods like these have actually been used in school and still are but math teachers are trying to remove these methods. It doesn't teach the importance place values have, for one, and there are other principles in math that are more easily comprehended when accustomed to the proper algorithms. :/

[mefano]

Very funny technique

[KuroKageKaze]

XD i love it

[QQQQQAQQQQQ]

Noce for teaching, not for using.

[aprymak]

what about 999 X 999 ? 54 lines, 729 points...

[yeaitsthatgirl2006]

lol i learned this in 3rd grade

[Capekid1984]

great visual method that is the equivalent of the written algorithm - and just as real as any other method.

[CATSHITONEMM]

amazing! But need more theory and mmanupilation technique to actually proof the method...

It's great because this might define a new definition

behind the concept of "multiplication".

Interesting.

[RockinJack]

<quote>It's great because this might define a new definition

behind the concept of "multiplication".</quote>

You're friggin' kidding, right? The "method" showed here is but a graphical representation of one of the standard multiplication methods: it's a way retarded people can do multiplication and nothing but, perhaps.

[loveanimes]

nice but not a real methood

[Muffalopadus]

Awesome to show people, but calculator is faster.  :P

I'll be sure to show my friends. XD