And do you the trick for 15 multiplied by x or 17 by x.You just have to put 0 at start of x and also at the end,like this-0x0.Now,multiply x with unit digit in this case 5(15) or 6(16),that comes 0xto the power of 5 or 6and a zero at last now add pair of these nos. like 0+x into 6or5.Now add the pair and get the answer.If the nom is 117,then all steps are sameexcept you have to make pairs of three in addition step and you you have to put 2 zeroes despite of 1.Congratulations,Now you acn look cool
You can actually see how this works, using algebra: A 2-digit number can be represented by the expression 10a+b If we then multiply this number by 11 we get 11(10a+b) = 110a+11b We can then split the coefficients of a and b into sums of powers of 10, so 110a+11b = 100a+10a+10b+b If we then factor, we get 100a+10(a+b)+b Therefore, the 100s digit is simply the same as the original 10s digit. The units digit remains the same, and the 10s digit is the sum of both digits. What about if we have a 3 digit number, i.e. 100a + 10b + c If we multiply this by 11 we get 1100a + 110b + 11c Again, if we split the coefficients into sums of powers of 10 we get: 1000a+100a+100b+10b+10c+c If we then factor out the common coefficients, we get: 1000a+(100a+b)+(10b+c)+c Therefore, for a 3 digit number, the first and last digit as usual are the same. Then the 2nd digit in the product is the sum of the 1st and 2nd digit in the original number The 3rd digit in the product is the sum of the 2nd and 3rd digit in the original number Infact, you can repeat this process for any number. The first digit is always the first digit, and the last digit is always the last digit, and then every other digit in the middle is the sum of consecutive pairs of digits. Take this large number for example. 176936 x 11. The first digit is 1, and the last digit is 6, i.e. 1________6 Then we simply sum pairs of consecutive digits. 3 + 6 = 9 9 + 3 = 12 -> 2 6 + 9 = 15 + 1 = 16 -> 6 7 + 6 = 13 + 1 = 14 -> 4 1 + 7 = 8 + 1 = 9 Therefore 176936 x 11 = 1926496 However, you don't really _need_ algebra at all to see how it works, it just looks interesting (to some people). If you just simply remember that 11 = 10 + 1, then it's pretty obvious. If you take a number such as 176936, then multiply it by 11, you're just adding itself to 10 times itself, which is: 1769360 +176936 Therefore, it's pretty obvious to see how you sum pairs of consecutive numbers.
@@Guat231 Teacher: "And that's when the Banana People enslaved the Apple Tribe and took over all of the Kingdom of Fruitia" Guat231: "Huh? That's not a real place!" Teacher: "Oh, so you _are_ paying attention. Just checking!"
@@AwyanRamin-zg2ii I'll make it slightly less too much information: If a 3 digit number is represented by a multiple of 100, a multiple of 10, and a multiple of 1, this can be generalized as 100a + 10b + c If you then multiply that by 11, you have 1100a + 110b + 11c You can then split the 11 into 10 + 1: 1000a + 100a + 100b + 10b + 10c + c You can then factor the co-efficients (the "number" parts): 1000a + 100(a + b) + 10(b + c) + c And there you can see, you have a, a+b, b+c, and c, which represents adding the consecutive digits. As an example, let's take 258 where a = 2, b = 5 and c = 8. Substituting those values above would give us: 1100(2) + 110(5) + 11(8) = 1000(2) + 100(2) + 100(5) + 10(5) + 10(8) + 1(8) = 1000(2) + 100(2+5) + 10(5+8) + 1(8) Note how you have the 2+5 and the 5+8. That is where the summing of adjacent digits comes from. Of course, if you continue you'd get: 1000(2) + 100(7) + 10(13) + 1(8) = 2000 + 700 + 130 + 8 = 2838
Here's a quick algebraic explanation: 10a + b represents a two digit number, with 10a being the tens digit and b being the units digit. 11(10a + b) = 110a + 11b = 100a + 10a + 10b + b = 100a + 10(a + b) + b
For the brave among you, this trick also has a working pattern for at least three digit numbers as well. Lets take 11 x 123. The the first number and the last number stay the same (1__3), but to get the second number you add the first and the second numbers together (1+2=3, -> 13_3), and to get the third you add the second and the third numbers together (2+3=5, -> 1353), and indeed 11 x 123 = 1353. Carrying would apply the same here and probably would have to work right to left to be rigorous. I suspect this works for numbers of other lengths as well, but I've never had the balls to try and go for it yet.
Another way to make that much more easier is Multiplying by 10 then adding another 27 It is just making the problem easier only by using logic and no deep learning of math 27*11=27*10+27 That is just an example there are many other ways
how to do this but with 3 digit numbers: let's say we're doing 527*11 First, you put the numbers like this: 52 7 Then add 52 and 7 You get 59 Put 9 between 52 and 7 You get 5297 now you have a 5 Add the five to the hundreds, in this case it is 2 You get 7 so boom, you get 5797
I'm late but there's much easier version for this. Just copy the first and last digits of the number so it becomes 5xx7, then add first two digits which is 5+2=7, so 57*7 then do the same at the last two digits which is 2+7=9 so the answer is 5797👍
297 !! Thank u so much for this I’m really bad at math and I’m really sad about it because what if I don’t get a job or something. This was really helpful ❤ thank u for still reading
I used a trick that I invented myself since I was still in elemetary school. For example, to quickly multiply 11x27 in my head, I would times 27 by 10 and then add that with 27. So it would be 10x27=270 and then 270+27= 297. However this method is gets harder to do the further away the first number is from increments of 10. So it would be a lot harder for me to do something like 16x27 in my head
You can do it a better way by simply multiplying the number first by 10 then adding the number you are multiplying with for example 11* 33= (33 * 10) + 33 formula: X * 11= (X* 10) + X
297 way I use is diff, I first add a 0 in the end like it's multiplied by 10 then add the number 270 + 27 is 297 and that's how I found it, same with * 22 and stuff, I first find the x10 then it gets simplified
Who got the answer 297
👇
The answer for 11 x 27 = 297
Me
Me😊
Me
me😃
297, and I feel like a master just for learning this
yeah
And do you the trick for 15 multiplied by x or 17 by x.You just have to put 0 at start of x and also at the end,like this-0x0.Now,multiply x with unit digit in this case 5(15) or 6(16),that comes 0xto the power of 5 or 6and a zero at last now add pair of these nos. like 0+x into 6or5.Now add the pair and get the answer.If the nom is 117,then all steps are sameexcept you have to make pairs of three in addition step and you you have to put 2 zeroes despite of 1.Congratulations,Now you acn look cool
Me too for REAAAAALLL!!
And that is wrong it is 286
Nvm
This is how I do it:
27x10 = 270
270+27 = 297
IT'S RAPID
Yes I also do
Fucking legend
Me to! Easier. Thanks!
Same
THIS TRICK IS EASIER AND BETTER THAN YOURS. NOT TO BE MEAN OR ANYTHING.
You can actually see how this works, using algebra:
A 2-digit number can be represented by the expression 10a+b
If we then multiply this number by 11 we get 11(10a+b) = 110a+11b
We can then split the coefficients of a and b into sums of powers of 10, so 110a+11b = 100a+10a+10b+b
If we then factor, we get 100a+10(a+b)+b
Therefore, the 100s digit is simply the same as the original 10s digit.
The units digit remains the same, and the 10s digit is the sum of both digits.
What about if we have a 3 digit number, i.e. 100a + 10b + c
If we multiply this by 11 we get 1100a + 110b + 11c
Again, if we split the coefficients into sums of powers of 10 we get:
1000a+100a+100b+10b+10c+c
If we then factor out the common coefficients, we get:
1000a+(100a+b)+(10b+c)+c
Therefore, for a 3 digit number, the first and last digit as usual are the same.
Then the 2nd digit in the product is the sum of the 1st and 2nd digit in the original number
The 3rd digit in the product is the sum of the 2nd and 3rd digit in the original number
Infact, you can repeat this process for any number.
The first digit is always the first digit, and the last digit is always the last digit, and then every other digit in the middle is the sum of consecutive pairs of digits.
Take this large number for example. 176936 x 11.
The first digit is 1, and the last digit is 6, i.e. 1________6
Then we simply sum pairs of consecutive digits.
3 + 6 = 9
9 + 3 = 12 -> 2
6 + 9 = 15 + 1 = 16 -> 6
7 + 6 = 13 + 1 = 14 -> 4
1 + 7 = 8 + 1 = 9
Therefore 176936 x 11 = 1926496
However, you don't really _need_ algebra at all to see how it works, it just looks interesting (to some people).
If you just simply remember that 11 = 10 + 1, then it's pretty obvious.
If you take a number such as 176936, then multiply it by 11, you're just adding itself to 10 times itself, which is:
1769360
+176936
Therefore, it's pretty obvious to see how you sum pairs of consecutive numbers.
Me when my math teacher says "show the process":
(NO hate btw)
This is what the teacher does after i dont pay attention for 1 second
This is wrong
My reason too much information
@@Guat231
Teacher: "And that's when the Banana People enslaved the Apple Tribe and took over all of the Kingdom of Fruitia"
Guat231: "Huh? That's not a real place!"
Teacher: "Oh, so you _are_ paying attention. Just checking!"
@@AwyanRamin-zg2ii
I'll make it slightly less too much information:
If a 3 digit number is represented by a multiple of 100, a multiple of 10, and a multiple of 1, this can be generalized as 100a + 10b + c
If you then multiply that by 11, you have 1100a + 110b + 11c
You can then split the 11 into 10 + 1:
1000a + 100a + 100b + 10b + 10c + c
You can then factor the co-efficients (the "number" parts):
1000a + 100(a + b) + 10(b + c) + c
And there you can see, you have a, a+b, b+c, and c, which represents adding the consecutive digits.
As an example, let's take 258 where a = 2, b = 5 and c = 8. Substituting those values above would give us:
1100(2) + 110(5) + 11(8) =
1000(2) + 100(2) + 100(5) + 10(5) + 10(8) + 1(8) =
1000(2) + 100(2+5) + 10(5+8) + 1(8)
Note how you have the 2+5 and the 5+8. That is where the summing of adjacent digits comes from.
Of course, if you continue you'd get:
1000(2) + 100(7) + 10(13) + 1(8) =
2000 + 700 + 130 + 8 =
2838
i used this in my math class today and my teacher said i used a calculator. 🤔😂
AHAHAHAHA
very funny
297
Well that was some basic maths so your teacher lied to you
Lol
Trying UA-cam Shorts out to see if this can help bring in more people to the channel. We’ll see 🤷🏽♂️
Good idea
@@gurnoorsingh8557 this is mental math, it’s quicker and efficient
It’s working, just found your channel 😊
What about 75×12 I'm lost and I'm in 11th grade I'm so bad at math but somehow reached 11th grade
@@xpreflex6265 same 😭
Here's a quick algebraic explanation:
10a + b represents a two digit number, with 10a being the tens digit and b being the units digit.
11(10a + b)
= 110a + 11b
= 100a + 10a + 10b + b
= 100a + 10(a + b) + b
No one cares bro
@@user-hv2kb8je6h I don't give a fuck.
@@user-hv2kb8je6h No one needs your comment bro.
Who are you..... You are ...... GOD of maths i didn't understand a single thing u said but feels smart
I don’t understand
For the brave among you, this trick also has a working pattern for at least three digit numbers as well. Lets take 11 x 123. The the first number and the last number stay the same (1__3), but to get the second number you add the first and the second numbers together (1+2=3, -> 13_3), and to get the third you add the second and the third numbers together (2+3=5, -> 1353), and indeed 11 x 123 = 1353. Carrying would apply the same here and probably would have to work right to left to be rigorous. I suspect this works for numbers of other lengths as well, but I've never had the balls to try and go for it yet.
297
297
DO NOT THINK I JUST COPIED THAT ANSWER
I done it by my own self
@@user-sd4pc3sj4v we don't give a fuck
297
Oh shit that’s neat
297
Fr
Don't swear
@@Maxine_on_paws_fox shut up meg
@berktahaozkan4593 LOL
Thank ya you just got another sub
Great video man!
This method seems much simpler than I did it, I would just do (27 x 10) + (27 x 1) this is usually how I break apart harder problems mentally.
I always do 27*10 and 27*1 and its pretty easy than this in my opinion
@@444.sanuji_n bro he just wrote the same thing
That's exactly me
27 x 10 is 270 and 270 x 1 is 270 but 27 x 11 is just 297
@@TheGoat-kq1cx 27x11 = (27x10)+(27x1)
27x10 + 27x1
270 + 27
297
I don't know why you multiplied 270 by 1 but ok
THANK YOUUUU
that was pretty helpfull
Another way to make that much more easier is
Multiplying by 10 then adding another 27
It is just making the problem easier only by using logic and no deep learning of math
27*11=27*10+27
That is just an example there are many other ways
Thanks for the trick! I feel like I’m smart!
I got excited and didn't even finish the video and went to ask my mom to quiz me she said 11×78 I said 7,158 we've been laughing for 5 minutes.💀
7+8 is 15. Then carry 1 put it to 7+1 8. Therefore 858
@@yurrrgo8836bro i think we all know that
@@yurrrgo8836we all saw the video 😭 the joke was he got ahead of himself before finishing the video
858 lol
11x78=758
just found this channel recently with them integral shits, great content
how to do this but with 3 digit numbers:
let's say we're doing 527*11
First, you put the numbers like this: 52 7
Then add 52 and 7
You get 59
Put 9 between 52 and 7
You get 5297
now you have a 5
Add the five to the hundreds, in this case it is 2
You get 7
so boom, you get 5797
I'm late but there's much easier version for this. Just copy the first and last digits of the number so it becomes 5xx7, then add first two digits which is 5+2=7, so 57*7 then do the same at the last two digits which is 2+7=9 so the answer is 5797👍
5797
Tysm for the trick it helped a lot
Great stuff man!
Basically what I do is make the 2 into 220 and 7 into 77 and add them
297 is the answer for the last question.
And thanks for the trick
😮😮😮😮
Tysm this helped me so much with my school
297 !! Thank u so much for this I’m really bad at math and I’m really sad about it because what if I don’t get a job or something. This was really helpful ❤ thank u for still reading
Every body here be like 297😭😭😭that's not what I came up with
Shit happens.
@@kensmechanicalaffair 🥲
What did you do 😭
@@callmehcit I don't even know😭
ty so much
Brahhh your are truly amaziny
297😁 thank youuu💞
Wowww I love this, I’m going to teach my students this! They’re gonna love it, thank u
Your a teacher
Yes :) @@user-iq6uh5uo1n
Sir mera kal regional level he. Aur aapne mujhe ye video deke mete sare doubt clear kar diye thanku so muchh❤
297! This really helped! Thanks!
ahh cheeseee i just did quick math :o thanksss
297 wow you explain soo well that i can understand so easily can u do one for division
same i feel like im a pro at multiplication
I used this trick and I stumped my whole family and class lol
LESGOOOOOOO
Whose answer is 297
👇🏻
👇🏻
Hi @LudusYT, How do you go about multiplying 3 digits or 4 digits?
Awesome, using this
297🙂👍
the fact that it's 11:27 AM right now! haha
Thankyou man
Cool trick!
Me: * Finishes the video *
Him: Now what's the answer to 11×27?
Me: Eh.
I used a trick that I invented myself since I was still in elemetary school. For example, to quickly multiply 11x27 in my head, I would times 27 by 10 and then add that with 27. So it would be 10x27=270 and then 270+27= 297. However this method is gets harder to do the further away the first number is from increments of 10. So it would be a lot harder for me to do something like 16x27 in my head
Hi thx for the hack, but how can I make the addition quick?
Math is all about Patterns & Logic
If 3x - y = 12, what is the value of 8^x/2^y?
A: 2^12
B: 4^12
C: 2^14
D: 6
The answer is A
Just to be clear, this method only works on 2 digit numbers that are 5 or less
what if its 304 times 580, i used this trick and i got it to 638 when its 176320 can you make video about that?
Missed opportunity to make a perfect loop
Ain't no way where have I been on my life🤣, thank you for this
I love you man
I feel like a master
If the number on the upper part isnt the same as here. Will the method be the same or no
I can’t belive I learnt soo much from a short wow
These questions are so easy. I do them in less than 5 second. How do you do bigger and more complicated double digits quickly.
Great video I subbed
You made this easier for me
Fucking new skill!!! Thank you!
Bro new exactly what he was doing there 😂
me watching math videos mom:I'm grounding you for watching memes
me:why sees the 69
I keep thinking this guys the guy who says 2023 has gone even crazier
W explanation
JEEZ A NEW STEP TO SUCCESS
Does this only work when multiplying by 11 or can you you by chance multiply 10x19 and use this method and it still work?
thanks bro
How do i know what to split?
Bro's teaching this to a meth topper 💀
Does this work with more than twi digit numbers
You can do it a better way by simply multiplying the number first by 10 then adding the number you are multiplying with for example
11* 33= (33 * 10) + 33
formula: X * 11= (X* 10) + X
Omg I cannot🙀🙀🙀🙀
This is good mathed
297. It is actually so easy and it makes you feel like a genius!
I’m finna keep on practicing this and practicing then I will become a math calculator
Just do the number(27 in this case) below or over the 11 plus itself but a 0 on the right of one of the 27s
297 at the beginning I already had known this methodology
What abt multiplying by 3 digit numbers?
297
way I use is diff, I first add a 0 in the end like it's multiplied by 10 then add the number
270 + 27 is 297 and that's how I found it, same with * 22 and stuff, I first find the x10 then it gets simplified
Bro i did 11x27 in 11 secs without that strat
I wonder how many people went straight to the calculator on their phone with the answer lol
297, thanks for the tip!
wow!
Imagine your in school and do that hack and you get it wrong
I did all of this blindfolded 💀 and i just seen this video
You're doing God's work here. We should be taught this in school.
Ty soo much
Dope
197
Edit: I meant 297 it was typo
Just put 2 and 7 on the side and add them together with is 9 so put 2 on the left 9 in the middle and 7 on the right
I thought this was common knowledge
I can do this in my head and im in 7th grade math before even watching the video
I just Multiply by 10 - 10x27 = 270, then add another 27 so 297
Just use turtle neck method.
What about numbers besides 11? I tried 12x17 and it didn't work. 😢
I'm enjoying this as a guy with calculator
296 thanks for the cool trick man❤🎉
Am I the only one who do this trick all the time💀.
My trick is much simpler: add a zero to the number then add itself. 27x11= 270+27=297
297 THANK YOU SO MUCH!
Thank you