Math Trick - Multiply Using Lines!

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This amazing multiplication trick possible has it's origins in Japan -although I have heard arguements it is a Vedic math trick.
Either way - this trick allows you to multiply two numbers quickly and accurately, using a handy visual method - lines.
This method does not use any multiplication tables, making it accessible to all learners.
Part 2 of this video (how to multiply using lines with fives and zeros) is here:
• Math Trick - multiply ...
Arithmetic made simple!
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Опубликовано:

27 янв 2013

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Комментарии : 897

@healthandyou4963 2 года назад

This man just changed my perception towards maths ,I never knew calulationg could be so interesting.Thanks man!

@tecmath 11 лет назад

Thanks for watching. The reason for the same numbers.....luck I guess (Ididn't know this was the case!).

@olufred9424 3 года назад

Your channel has increased my test scores by so much. Thank you very much 😊

@nunu-zo6vz 6 лет назад

I remember being confused at grade four when they taught us this, now looking back to it, it's actually more simple.

@neozinicola7391 3 года назад

I shocked my teacher when I did this on a test

@lucasplayz2091 3 года назад

Haha

@eeeeoree4973 3 года назад

Well ,that’s amazing

@cedricdorian2173 3 года назад

instablaster...

@arvahello7171 2 года назад

I'm planning on doing this for my gcse bc i cant do long multiplication

@pigletandeeyore.1199 2 года назад

Same

@Xeidasx 10 лет назад

thank you for showing this to me!!!! i wish they had taught us this in school...

@thuglover87 10 лет назад

Same here stupid teaching methods were given to us

@Dr4g0nW00d 10 лет назад

they never learn u something useful in school

@MrMattbarbs 9 лет назад

Grammer might be nice.

@EETechs 9 лет назад

Matt Barbour duuur, thirr nevers learns mes this stuf'SSS. I fur sur dum'.

@rajangamkannan9281 7 лет назад

Xeid

@christiankong5874 5 лет назад

This got patched in the latest update

@aishao5214 4 года назад

Wut

@Lennyst 4 года назад

...

@selmanbela6455 4 года назад

Do you mean this dosent work anymore?

@liamcabildo 4 года назад

It was a joke relax..

@kubakakauko 4 года назад

hahahah, this made me lough

@ElizesFavorites 10 лет назад

This is awesome! Comes in perfect for my exams. Thanks for sharing xx

@chtitmog 10 лет назад

If I knew this when I was a kid, it would have changed the way I saw maths back then. Lol. Great demonstration! :-)

@rellyfranc9836 6 лет назад

Thank you so much I have struggled for the longest to find a trick that I can understand. Very grateful for this 😬😬

@mrsricerocket5871 5 лет назад

I love it thank you! Finaly i can get my head around times tables

@ookalar665 7 лет назад

This is a great math trick. I'm going to be writing my ged test in Canada in a couple weeks and this will really help me! Thanks

@seesharp53 5 лет назад

I've seen this method described elsewhere many times - the examples shown always use low value digits, always. It's when you try something like 97 x 58 that you realise how tedious it gets.

@Olnx 2 года назад

agreed

@Alkis05 2 года назад

High digits alway a problem. Maybe work with complements: 100 x 60 - 97 x 2 - 3 x 60

@Alkis05 2 года назад

Or use a different line (eg. dashed line) to represent a line with value 5 instead of 1. That cuts down the max number of lines per digit from 10 to 5.

@janetheostrich 7 лет назад

This just blew my mind - thank you!

@Xake64 9 лет назад

This is going to help me so much with my maths. Thanks man this is going to make a huge difference

@CaddraLophat 9 лет назад

That's amazing, Oml thank you maths has never been easier

@keatoncallaghan3101 7 лет назад

this is a massive help for my year 9 exam going into year 10 its really important i nail my times tables thanks

@theempath8244 3 года назад

I have dyscalculia and this has helped me to understand multiplication, so I thank you very much for his video.

@tecmath 11 лет назад

Correct! It would end up a messy quagmire to work out 8945 x 9854, and for these sorts of cases it is not the quickest method. I'd use the vedic math techniques to do those types of calculations.

@LuminSSS 2 года назад

@@sumatiranjan126 this is op. wtf r u talking about?

@calderdash9975 3 года назад

Thanks, think that's one of my favourite, maths tricks of all time.

@tyleraustinpanton8290 6 лет назад

Thank you so much tecmath, your videos are GREAT keep posting. THANKS.

@PriscillaFarmer1 10 лет назад

I LOVE this! Thank you for your time!

@crazypuppypoker 10 лет назад

im in college and have always struggled with multiplication and this is the greatest thing i have ever learned

@nigelmoscrop9987 9 лет назад

How about seven ,eight or nine in the equation , could be a bit messy , I'd say !

@named161 2 года назад

Bro I literally got out of bed and grabbed my graph paper for this one, cheers mate! This is Awesome!!!

@aeroga4717 7 лет назад

Thanks i got it, Flawlessly thanks for your exceptional explanation

@sbalogh53 10 лет назад

I just tried it with 427x126 and got the correct answer of 53802. I find the hardest part is lining up the groups correctly, but practice would probably solve that issue.

@dannymcphee 9 лет назад

Really cool Mr. Tecmath, quite an interesting diversion, and refreshing mental exercise.--Thanx

@BabyTweetyPie13 11 лет назад

This is amazing! Thanks so much! It's way better doing this method than having to remember the tables c: Really helped with my maths!

@Shadownes 10 лет назад

OIH :O I've been shitty at math all my life, this is really the best way to calculate. Thanks mate for uploading :D

@itachiuchiha7842 3 года назад

@eeeeoree4973 3 года назад

@@itachiuchiha7842 what are you tryna know bro this comment was 7yo ago mybe before your birth 😂😂😂😅

@edwarddanial2584 11 лет назад

you do a great job.I also like to times two #:s by 11 in my head faster than a calculator.simplistic yet unique

@petrusvenasiu3630 3 года назад

What an amazing method! Thanks for making my life easy

@terrorzt4477 9 лет назад

You explained it very well, thank you

@MONKEYBALLZism 10 лет назад

So relieved I always hated the other way they teach in school one thing learned today :)

@suspicious_coconut_water 2 года назад

Dude you just helped me learn quick math in my head

@Coolblueocean2001 10 лет назад

Awesome video. Excellent presentation!!

@TheDoggirl3 2 месяца назад

Thanks for teaching this new way that I never learned in my school days.

@TheDoggirl3 2 месяца назад

Especially when your partially deaf like me.

@debadeepdatta 3 года назад

Your tricks are super awesome.

@frinduangelo4375 10 лет назад

this is realy good and helpful. pritty easy as well

@fadelali330 2 года назад

You explained it clearly,thank you

@willymcbilly635 10 лет назад

FUCK WHY DID I NOT DISCOVER THIS BEFORE MY EXAMS

@mamuhanzo6791 8 лет назад

what about if any number has a zero ? for example 101x12 or 304x203

@user-zb8br6nw3e 7 лет назад

do you find out

@tacorevenge87 7 лет назад

Use the vigesimal system mate, that is why the mayas invented it, to deal with the zero, also invented by the mayas.

@mamuhanzo6791 7 лет назад

Arturo Manaia ty bro

@SirKingHoff 7 лет назад

whenever you encounter a 0 just leave a space where the line would be drawn if the unit was say 1 instead of 0, then draw a circle and use that. but instead of adding the intersections like you normally would just make that group (thousands, hundreds etc) 0.

@moeinmk5262 7 лет назад

SirKingHoff

@apolinarcisneros2784 9 лет назад

That's nice.....thank you for sharing it. You have a great day.

@irfangamerhd3394 8 лет назад

Thanks for showing the maths work

@akivaSk 3 года назад

I prefer doing it at a table. f.e 212*13: 2 1 2 * - - - 1 | 2 1 2 3 | 6 3 6 (Diagonal from the top right corner to the bottom left corner of the result) answer: (2)_(1+6)_(2+3)_(6) = 2756 This is especially better for large numbers

@cynceresin9791 11 лет назад

I'm bad in math, but a visual learning and this make since to me. I will now continue practice .

@justcheryl5568 4 года назад

It works and used common sense to adjust to zeros or numbers greater than 8 - very cool

@vaishnavic6632 3 года назад

Great ...first time seen this kind of calculation 👌

@lavendergaming7830 5 лет назад

I LIKE TO USE LINE BUT I NEVER USE SOME BUT NOW AM LEARNING THANK YOU SO MUCH FOR LETTING ME KNOW TO USE LINE!!!!

@lindsayaustria4474 8 лет назад

Thanks it helped me a lot !

@christinasanchez6692 10 лет назад

That is a really cool trick great job

@maryj9684 5 лет назад

I HAVE MY SAT TOMORROW I NEEDED THIS 👊🏿😂😂

@ChastityBTheEntrepreneur 9 лет назад

OMG!!!! This is phenomenal lol! This makes math that much more fun to do.

@surortaal 10 лет назад

i must have missed some of your previous videos because i cant find to have a solution for 10 *10 and for numbers smaller than 10 for multiplication, according to this method. can you please help me out on that . i really enjoyed this method of multiplication and do you the same method for addition too.thanks .

@Rawrasur 3 года назад

Omg thank u i have been failling my math classes for the past 3 years 😭😭😭😭 but now i finally understand cuz i found the method that works best for me

@tecmath 3 года назад

Glad to have helped.

@genji2645 11 лет назад

Nailed it.!.!.!. I will share this!!

@andrewbell466 10 лет назад

Thanks sooooo much I never could used to do times but thanks to you i now can as I have SATS coming up and I think I'll get a score thanks so much and that's a new sub to you xx

@captainbueno 10 лет назад

This is interesting, and it is worthwhile to look at it for a bit and understand why it works, but on average you will get the answer more quickly with numeric "long" multiplication.

@Theveryevilturtle 10 лет назад

So helpful thanks! Since I don't know my times tables (I'm really bad at math) this has really helped! Except my math teacher got mad at me when we did a test the other day and I used a method that he didn't know :/

@Shad0wDarkNess 10 лет назад

Absolutely fantastic!

@Snagglefratz 10 лет назад

I'm an old dude and I got this right away. It's really cool. It's a shame they didn't teach this when I was in school.

@aimg0d-pubgmobile905 6 лет назад

OMG Thanks a lot that will be a very good thing for me to do in school

@Mario-pw4pq 6 лет назад

so cool am gonna master this now

@vinalxser 9 лет назад

Omg thanks! I finally understand this

@joanne3747 8 лет назад

This video is so help full

@MechanicsStudents 10 лет назад

YOU ARE SO HELPFUL OMG!!!!

@SaadSuleman 11 лет назад

Brilliant!!! Wish I knew this when I was at school...... :(

@3mjwan941 5 лет назад

Thank you soooo much bro this is the best thing ever

@theicedevil 2 года назад

This method i can actually do in my head.

@DannnnnyW 11 лет назад

Hey thanks for the well instructive informative video. I was firs introduced to this method on RU-vid an many of the videos kind of confused me in one way or another. But not your video! It was well executed and I now know this method when combatting multiplication with no fuss thanks to you! *****

@Lace_Loves_Icecream Год назад

This man just gave me some Knowledge that I will use to confuse my math teacher

@guitarlessonsformortalssan8619 10 лет назад

The more ways you have to look at a problem the better, so I'm going to say cool method for building a mental picture.

@jeffkukkee Год назад

I'm 40 and just learning this now.... amazing!!

@josephandthegang9433 3 года назад

When my teacher put this on my test I got it wrong LOL

@detroitmade_jts 9 лет назад

Thank you.... I tried so hard to figure out the other videos, but with your video it clicked instantly....being a 2014 graduate of High School I wish they'd taught this to those in my class who had a hard time with math.....but thank you once again for sharing some of your knowledge

@stus2159 6 лет назад

You were thinking about teaching people this method?? Are you dense? No wonder our education system is fucked.

@cgoodloe 6 лет назад

This is awesome!

@00gamer2 9 лет назад

This is basicly a visualization of the foil method you would use in expanding brackets, and extending that to two numbers i.e. 14 * 12 would be (10 + 4)(10+2) = 100 + 20 + 40 + 8 = 168. Expressing this in a algebraic form is probably more space efficient. Great video, btw.

@sirmagid2962 7 лет назад

nice work

@jaydensvideos7541 6 лет назад

Thanks for the video its helped me 😁😀

@jimsung3447 6 лет назад

Good job 👏🏻

@jhairoaquillecruz6419 2 года назад

Thx bro this very helpful

@kathleendrury2476 6 лет назад

This is amazingly awesome... thank you so much!! :D :D :D

@TEE78SR 4 года назад

I like this method, but lost me if there was 0 included I need to see how this works as well on the board???

@rileyk5228 4 года назад

Try coloring it a diff color and then not counting those intersections. Or pretend to draw the line and skip to the next spot

@sandrabowen8956 4 года назад

@@rileyk5228 thats a great idea lol

@nickname3114 4 года назад

Isnt to hard there is no spoon/zero so don't draw a line and put a 0 where a line isnt try 10x12 One line on the right no lines just a spoon on the left U end up with 012 now you can't have a spoon on the left so swap it to the right that's it 12spoon 😁 The Matrix there is no 🥄

@nickname3114 4 года назад

doing higher number is a pain try 6789 19x9, 99x99 is there a trick around this problem to many lines

@x7teee 4 года назад

Dean Edwards 99 X 100 - 99 lmao

@winlalitha 10 лет назад

Really Really Superb Technique

@thecutelittleleaf 10 лет назад

Wow! That's so interesting!

@RandiRain 11 лет назад

That is just too cool!!

@oliversmith8220 11 лет назад

Great written method going to use that in my exam but difficult to work out in your head lol :)

@mtelab4941 10 лет назад

This is pretty cool, nothing I'd ever use, but very cool :)

@mquirk00 10 лет назад

These get real ridiculous with anything higher. Its meant for smaller multiplication. Doing something like 7895 x 68 can take a whole sheet of paper, and that's a relatively small multiplication problem. The ones demonstrated here are pretty much the ceiling for being a practical method. Even something like 689 x 42 can get pretty out of control on a piece of paper.