Honestly I dreamed about this after my birthday. Before I saw this I have proof that I made this type of multiplying numbers by myself. The dream was so realistic. It really taught me how to do this. After that dream and I woke up I was so nervous try this. But I really tried what I had seen in my dream, and it was true! Please, can anyone tell me who invented this because it was just an invention of my dream.
If you think math is just a foreign language, try Brilliant.org. It makes various concepts easy to understand by breaking them up into bite-sized pieces.
I'm in class 10 next month there's exam which will decide my whole future but because of this corona and my family problem can't study whole year and since my childhood I don't know multiplication but this helped he even though my chances of passing is lower then earth getting hit by an asteroid this just increased it thank you from the deepest of heart
Hello! I'm an elementary school teacher and just want to confirm that this method works for 1-digit X 2-digit multiplication. I tried it out, and as long as you carry things over, so far it works.
Hello. Yes, the method always works if you group and carry over. As I explain in the book, the method is essentially a shorthand for rapid counting of intersections.
This algorithm is no different than the regular algorithm with digits. Seriously. This is just plain old algorithm you learned in school under the guise of lines and dots. I like the visual component to it, but make no mistake, it is no different from what your school teacher have asked you to do.
You are exactly right. That's why it works. It' really cool though. I would like to challenge myself and one of my computer programming classes to write a computer program that solves it this way AND that draws it this way.
So with the final answer you went left to right, but with 2 digits I saw people go right to left. So when you get your final answer should I write left to right when I solve three digits problems and right to left when I solve 2 digit problems.
Looks a little random at first, but take a close look. Be sure to draw your lines at 45 degrees from the top part of your page, and to keep things neat, as this helps. We read from left to right.... so scan starting on the left. You see a first group of intersecting lines; section those off. The next section of intersecting lines (you have to think in columns here, vertically) is the middle section, and the last group on the far right, can be sectioned off as well.
I haven't tried it but in theory you should be able to. The way it should work is that you ignore the decimal point at first and multiply as if you were multiplying whole numbers and then you count the number of digits after the decimal points in the question (both numbers). Then go to the answer, leave how many digits you counted from the left and then put the decimal point. Also, feel free to ask any doubts about this.
Because 14 is 10 +4, and so the 10 carries over as a one towards the left. Same with regular addition and multiplication, if you get a result of 14 you put down a 4 and "carry the one" to the left side.
standard multiplication method is much faster and neater in my opinion. this seems like it exists just for the sake of being "cool", but it truly doesn't have a place in any math setting.
This is essentially the same as the standard multiplication method, only using lines as a substitute for numbers. But if you look carefully at the numbers each set of dots represents, it's the same numbers that are being added at the end. Some people, however, find drawings more intuitive than numbers, while for others it's the opposite.
Useless tool. This thing should not be taught. 256 x 45 or ay other non standard numbers easily. Faster, much faster with multiplication tables. Oh, do not get me started on Polynomials. Just because you can plug a couple of X's into this Chinese formula of yours does not make it Hoyle.
Honestly I dreamed about this after my birthday. Before I saw this I have proof that I made this type of multiplying numbers by myself. The dream was so realistic. It really taught me how to do this. After that dream and I woke up I was so nervous try this. But I really tried what I had seen in my dream, and it was true! Please, can anyone tell me who invented this because it was just an invention of my dream.
Honestly I dreamed about this after my birthday. Before I saw this I have proof that I made this type of multiplying numbers by myself.
The dream was so realistic. It really taught me how to do this. After that dream and I woke up I was so nervous try this. But I really tried what I had seen in my dream, and it was true!
Please, can anyone tell me who invented this because it was just an invention of my dream.
man got Giuseppi Tartini'd by the satan of arithmetic
Mind blowing. I’m constantly freaked out by the mystical ways of math. It’s a foreign language that I’ll never learn to speak fluently.
If you think math is just a foreign language, try Brilliant.org. It makes various concepts easy to understand by breaking them up into bite-sized pieces.
@@SimonTiger Payant ;-)
Thank you for explaining the zero line! I just picked this up off of a meme tbh and am using it to teach my 5 year old!
I'm in class 10 next month there's exam which will decide my whole future but because of this corona and my family problem can't study whole year and since my childhood I don't know multiplication but this helped he even though my chances of passing is lower then earth getting hit by an asteroid this just increased it thank you from the deepest of heart
Hello! I'm an elementary school teacher and just want to confirm that this method works for 1-digit X 2-digit multiplication. I tried it out, and as long as you carry things over, so far it works.
Hello. Yes, the method always works if you group and carry over. As I explain in the book, the method is essentially a shorthand for rapid counting of intersections.
It works with 3 digits too
Eric Virtue see my videos ..... I will be happy if I can help anyone
TOTALLY NAILED IT BRO!!!!
It is a great strategy that all students should know about multiplication.
There is a quite different algorithm to multiply two numbers having digits greater than 1,2 and 3. Keep that in mind.
Thank you so much for this, might have just made my life 10 times easier
It’s called Japanese mathematics
But I thought it came from india along with vedic mathematics in the sutras
Yeah your right
Can you do 397*4 please. I can’t get the answer correct using lines. Not sure what I’m doing wrong.
Thanks you for explaining now I am understand 🙂
I have a question. How do you know how many groups you need?
You start out by drawing them spaced out enough for the vertically aligned groups to look obvious. That's how, I'm assuming.
Why is this better then the normal methode?
idk but its cool right l my daughter can study more easier :D
Can you do the division. Please. Thank you
It's such a good method it bears repeating.
I tried multiplying 789 X 987, this method gave me a heart attack and a bunch of waste paper - thanks ...
Think big. Use a big shade of paper. Try it again. Good luck.
this method only works for some simple numbers by dozens. hundreds multiply by hundreds = try again.
It took way too long, but I did get the right answer using this method
A little ambitious there eh?
Try asking the second digit. 😁
This algorithm is no different than the regular algorithm with digits.
Seriously.
This is just plain old algorithm you learned in school under the guise of lines and dots.
I like the visual component to it, but make no mistake, it is no different from what your school teacher have asked you to do.
You are exactly right. That's why it works. It' really cool though. I would like to challenge myself and one of my computer programming classes to write a computer program that solves it this way AND that draws it this way.
Evgeny Savelev see my videos ..... I will be happy if I can help anyone
Evgeny Savelev actually it’s quite helpful if you have a hard time memorizing times tables and we also get taught this way in school.
Does anyone know where this method comes from? Or why it works in the first place?
1. The method comes from Japan.
2. I Have No Idea
So with the final answer you went left to right, but with 2 digits I saw people go right to left. So when you get your final answer should I write left to right when I solve three digits problems and right to left when I solve 2 digit problems.
So what's the purpose of drawing a blue line for zero if it's not going to be used anyways?
to help visualizing the groups
For the same reason 101 isn't equal to 11 - the space the zero takes up still matters. Otherwise you could misgroup the lines.
So you know it is a zero😕
do you sell the book, or do i go through amazon?
please do multiplication of 219X32 using lines
ruclips.net/video/Y_RaLSI3k44/видео.html
Excellent work bro. I'm fan of this channel
Great video
They actually do first number * first number = first digit, last number * last number = last digit, first * last + last * first = middle digit
Thank you so much
Going to teach my students
Great video. It is really interesting. Thank you for posting that :-).
Thanks you for teaching me 🙏
What I don't get.... How do you know where to divide the dots? Seems random to me...
Looks a little random at first, but take a close look. Be sure to draw your lines at 45 degrees from the top part of your page, and to keep things neat, as this helps. We read from left to right.... so scan starting on the left. You see a first group of intersecting lines; section those off. The next section of intersecting lines (you have to think in columns here, vertically) is the middle section, and the last group on the far right, can be sectioned off as well.
Eric Verchew Okay, I'll try again and see if it works and I can fully understand it. Thank you!
what confuses me grouping after drawing a bunch of lines
One less group than total numbers present 123x321 is 6 numbers so there will be 5 groups
Well done my bro keep going to good work 👏👏👏👏👏
Great Video!👍💯
Can you do this with fractions or decimals?
I haven't tried it but in theory you should be able to. The way it should work is that you ignore the decimal point at first and multiply as if you were multiplying whole numbers and then you count the number of digits after the decimal points in the question (both numbers). Then go to the answer, leave how many digits you counted from the left and then put the decimal point. Also, feel free to ask any doubts about this.
Thanks
How would you do this with three numbers?
do it with 2 and use the result for the 3rd
Thanks :)
Nein, solche tollen Methoden, welche man auch lange nach dem Schul-Leben noch gebrauchen kann, lernt man in Deutschland nicht. Leider.
Thanks , please calculate for 653 X 32 = should be 20,896 and share. It's coming
1827196 , which is totally wrong
Can you use this method in Base 6? I got that question on my assignment and I’m not sure how to answer it.
ruclips.net/video/Y_RaLSI3k44/видео.html
its so awsome and so easy
very nice
Not gonna lie I hate this method but its very interesting how it actually works!
How to group them?
How do you do 3 numbers that are over 9
tough for bigger digits like 998 x 769. anyway good one.
Iv found this too
i don't think so, you can use this method for even larger numbers
he didn't say you can't, it's just rly tough like he says, it would waste a lot of time drawing all those lines
ruclips.net/video/Y_RaLSI3k44/видео.html
ruclips.net/video/Y_RaLSI3k44/видео.html
So, it took me 22 seconds to do the multiplication as ALWAYS, and the video took 50 seconds explaining it and wasting paper. Efficient!
Last question was not to much understandable
Doesn't seem a short cut for larger numbers
Very good
Nice
when do you know to carry or mess with?
When you get a result that's greater than 10, you carry. Same as with regular addition.
Which app did you use for creating this?
Amazing
where are you from sir.
thanks...iloved math!!
Sir please do with bigger numbers like 789
how do you do 12345 x 123
you don't lol
Why do you have to carry the 1? Like where did the one come from
Because 14 is 10 +4, and so the 10 carries over as a one towards the left. Same with regular addition and multiplication, if you get a result of 14 you put down a 4 and "carry the one" to the left side.
Naomi Pancake see my videos ..... I will be happy if I can help anyone
It came from the 14😶
how does it work for X amount of digits and Y amount of digits?
I'm guessing just use different colors for x and y. Where x and y cross, it becomes xy.
Can someone demonstrate 91 X 13? I'm stumped. Keep getting 9 as the first number.
ruclips.net/video/Y_RaLSI3k44/видео.html
can you also calculate 23x231 with this method?
omg yeah i just got it nvm lol
ruclips.net/video/Y_RaLSI3k44/видео.html
how, that is awsome
sir I have subscribes your. 👍👍😊
You multiply 168×129 can understand easier
i'm just lookin at the comments
i like the dogs on ur pic :D
@@tinminpark Thanks
@@doggythebarkerson5304 i even sub u :D
can u use this to multiply two numbers with different number of digits
Yes
Not comming to me answer
that japanesse math !
Try solving this
*9,543,659 × 547,932*
It is easy.
But holy sh**
That's a lot of lines.
ok
how bout 3 numbers tho
I am love math
or you can do it like a normal human being do it since ages ago
12
13
----- x
28 x 18💀
Can we do it with fractions and decimals?
Love your channel ~
Division...
standard multiplication method is much faster and neater in my opinion. this seems like it exists just for the sake of being "cool", but it truly doesn't have a place in any math setting.
This is essentially the same as the standard multiplication method, only using lines as a substitute for numbers. But if you look carefully at the numbers each set of dots represents, it's the same numbers that are being added at the end. Some people, however, find drawings more intuitive than numbers, while for others it's the opposite.
POV : You’re here because TikTok
336×786×896 plz explain
Multiply the first and the second to get the first answer and then multiply the third one and you have the answer
ruclips.net/video/Y_RaLSI3k44/видео.html
很新奇，但不够快
💯👍
SORCERY
no 12×13=156
Watch the video again
This is much slower than just working it out in my head :S
chunkylefunga I mean, in my opinion, 223x413 is much easier to do this way than in your head.
For 12 x 13, yes.
For 3457 x 8365, good luck doing it faster in your head.
@@oenrn you can do it like a normal human being
8365
3457
───X
@@KoeSeer "in your head" ;)
😵😵😵😵😵😵😵😵
Next time dont copy of dave hax
Useless tool. This thing should not be taught. 256 x 45 or ay other non standard numbers easily. Faster, much faster with multiplication tables. Oh, do not get me started on Polynomials. Just because you can plug a couple of X's into this Chinese formula of yours does not make it Hoyle.
Honestly I dreamed about this after my birthday. Before I saw this I have proof that I made this type of multiplying numbers by myself.
The dream was so realistic. It really taught me how to do this. After that dream and I woke up I was so nervous try this. But I really tried what I had seen in my dream, and it was true!
Please, can anyone tell me who invented this because it was just an invention of my dream.