Math Trick - Multiply Using Lines!

[@healthandyou4963]

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

[@olufred9424]

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

[@christiankong5874]

This got patched in the latest update

[@aishao5214]

Wut

[@Lennyst]

...

[@selmanbela6455]

Do you mean this dosent work anymore?

[@liamcabildo]

It was a joke relax..

[@kubakakauko]

hahahah, this made me lough

[@neozinicola7391]

I shocked my teacher when I did this on a test

[@lucasplayz2091]

Haha

[@eeeeoree4973]

Well ,that’s amazing

[@cedricdorian2173]

instablaster...

[@arvahello7171]

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

[@pigletandeeyore.1199]

Same

[@Xeidasx]

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

[@thuglover87]

Same here stupid teaching methods were given to us

[@Dr4g0nW00d]

they never learn u something useful in school

[@MrMattbarbs]

Grammer might be nice.

[@EETechs]

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

[@rajangamkannan9281]

Xeid

[@nunu-zo6vz]

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

[@CaddraLophat]

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

[@akivaSk]

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

[@00gamer2]

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.

[@cynceresin9791]

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

[@chtitmog]

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

[@willymcbilly635]

FUCK WHY DID I NOT DISCOVER THIS BEFORE MY EXAMS

[@crazypuppypoker]

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

[@ElizesFavorites]

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

[@named161]

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

[@mamuhanzo6791]

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

[@user-zb8br6nw3e]

do you find out

[@tacorevenge87]

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

[@mamuhanzo6791]

Arturo Manaia ty bro

[@SirKingHoff]

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]

SirKingHoff

[@ookalar665]

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

[@Shadownes]

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]

?

[@eeeeoree4973]

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

[@BabyTweetyPie13]

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!

[@janetheostrich]

This just blew my mind - thank you!

[@calderdash9975]

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

[@tecmath]

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.

[@Bwzskxhxao]

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

[@tecmath]

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

[@BlindManBert]

Very nicely described and nice looking!! I posted a similar discussion in my “Math Rules” channel. Several folks commented out that this technique is not truly Japanese. In fact, it was apparently used to teach kids how to use an abacus perhaps up until thirty years ago, but since then it’s been dropped from the curriculum. So Japanese students today would never be taught this approach. I don’t refer to it as “Japanese” as much as the “graphics crossing” approach for lack of a better name.

[@edwarddanial2584]

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

[@nigelmoscrop9987]

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

[@theempath8244]

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

[@suspicious_coconut_water]

Dude you just helped me learn quick math in my head

[@mrsricerocket5871]

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

[@seesharp53]

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]

agreed

[@Alkis05]

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

[@Alkis05]

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.

[@Snagglefratz]

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.

[@lavendergaming7830]

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!!!!

[@rellyfranc9836]

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

[@genji2645]

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

[@sbalogh53]

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.

[@jeffkukkee]

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

[@keatoncallaghan3101]

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

[@detroitmade_jts]

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]

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

[@petrusvenasiu3630]

What an amazing method! Thanks for making my life easy

[@MONKEYBALLZism]

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

[@DannnnnyW]

Hey thanks for the well instructive informative video. I was firs introduced to this method on KZbin 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! *****

[@TheDoggirl3]

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

[@TheDoggirl3]

Especially when your partially deaf like me.

[@irfangamerhd3394]

Thanks for showing the maths work

[@fadelali330]

You explained it clearly,thank you

[@debadeepdatta]

Your tricks are super awesome.

[@Xake64]

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

[@maryj9684]

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

[@aeroga4717]

Thanks i got it, Flawlessly thanks for your exceptional explanation

[@tyleraustinpanton8290]

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

[@Rawrasur]

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]

Glad to have helped.

[@gesunheit]

Super awesome! I'm a person of two things math and complications.

[@SaadSuleman]

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

[@josephandthegang9433]

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

[@jessicamoneaevans1171]

This is so awesome. Go explain. My boyfriend not that good in math and this help so much.

[@tecmath]

Thanks

[@matejbanik2505]

Thank you you are better than teachers😁

[@tecmath]

I am a teacher. But thanks 😁

[@dannymcphee]

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

[@Coolblueocean2001]

Awesome video. Excellent presentation!!

[@christinasanchez6692]

That is a really cool trick great job

[@vaishnavic6632]

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

[@winlalitha]

Really Really Superb Technique

[@theicedevil]

This method i can actually do in my head.

[@frinduangelo4375]

this is realy good and helpful. pritty easy as well

[@Mountain_Terror]

You explained it very well, thank you

[@firstnamelastname3743]

School should really teach this. This japanese technique is really helpful

[@surortaal]

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 .

[@mitchb6068]

Our teacher wants us to learn this, this is pretty easy now:)

[@PriscillaFarmer1]

I LOVE this! Thank you for your time!

[@justcheryl5568]

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

[@ZakarooNetwork]

Thank You Sir. This has Just confirmed genius is Real and Ancient.

[@SteveFrenCH1889]

This is bonkers🤯🤯🤯

[@Shad0wDarkNess]

Absolutely fantastic!

[@oliversmith8220]

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

[@MrThompiTheCat]

Excellent video! I've watched several videos about this method, but this is the first time I've been able to understand and actually follow the reasoning. Thank you!

[@schhhhhtef]

Theeeeees ones he'a :) King ! Nice video.

[@honkhonk8009]

your accent is very relaxing

[@Lace_Loves_Icecream]

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

[@lindsayaustria4474]

Thanks it helped me a lot !

[@BlindManBert]

Answer: the intiial examples are typically quite simple and don’t involve both large numbers of crossings (like 19 x 81) or large number of carries in the addition phase. This is one of the limitations of this “graphics crossings” approach, I would say.

[@apolinarcisneros2784]

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

[@nino-ciampa]

4:15 among us

[@tecmath]

Yes - that is a limitation :)

[@joanne3747]

This video is so help full

[@MechanicsStudents]

YOU ARE SO HELPFUL OMG!!!!

[@andrewbell466]

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

[@fwblxck]

so cool am gonna master this now

[@aimg0d-pubgmobile905]

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

[@ProjSHiNKiROU]

To save lines, you can use a thick line to represent a number like 2.

[@ChastityBTheEntrepreneur]

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

[@bobbybang3421]

See I have a very very hard time in math now you just made math a bit more interesting

[@meshugunner]

Excellent. Not nearly as fast as using reference numbers or direct multiplication but it's very graphic and clear. It doesn't involve some seemingly magical formula like the Vedic methods. IMO it would be even more striking if the lines for the 10s & 1s were in contrasting colors. I think I will use this to teach my young grandson. Thanks.

[@mquirk00]

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.

[@mmedeuxchevaux]

it's still amazing.

[@jimsung3447]

Good job 👏🏻

[@marlongarcia3459]

Cool math tricks

[@luisj.torres8178]

Now my math teacher will be proud!

[@laxmimehta4246]

AS i am a 10 year old i feel a bit confused at first but then when i watched the video i felt as it this rocked this world!!!!!!!!!

[@mtelab4941]

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

[@thecutelittleleaf]

Wow! That's so interesting!

[@experiment2737]

Good job my ninja

[@captainbueno]

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.

[@ethitlan]

Whoever devised this is built different