The dislikes are from the people that try to race a calculator

@erickpineda2809

3 жыл бұрын

True there haters this actually helped me

@madhavibasava3193

3 жыл бұрын

9353343262 9353343262 9353343262 9353343262 9353343262 9353343262 9353343262 9353343262 9353343262 9353343262 Hi9353343262 Hi9353343262

Learned something new today. Can't wait to show my daughter. Thank you!

@plasma4430

3 жыл бұрын

>:)))))

@adnyatwasi

3 жыл бұрын

It's called as Vedic Math.. Indian legacy... u can search for same.. and u will find more content

@hp2179

2 жыл бұрын

Is this the "Foil Systems" like in algebra one?

The amusing thing about this trick is that this is what we learned in elementary school when learning to multiply. This is just a simpler way of thinking about it that doesn’t really explain how it works but gets the job done.

@calibratingform

3 жыл бұрын

Yep. And both this method and the standard method are really just the distributive law: (x+a)(y+b) = xy + xb + ay + ab. In the U.S., students call this rule "FOIL," but it's really just the distributive law three times.

You are a wonderful teacher who helped me in the way I delivered my lesson in front of the third grade without hesitation and fear with my head held high. I wish you a lot of happiness, appreciation and respect.

My son LOVES math but sometimes struggles with the way it’s taught in the American classroom. I am so glad that we as parents can now find resources at our fingertips that help our kids feel confident in their abilities… and excited that they learned it in a new way 😊

This is brilliant! I'm very grateful for this (and I like your handwriting) :)

Great video tecmath!

Before I didn’t even know how to do this method. And then I watched this video. Straight away, i got all the questions right and it takes 2 seconds!! THANK YOU

@tecmath

3 жыл бұрын

Thank you. I'm glad you liked it.

I love your channel, it's very very helpful! These are very genius tricks!

This is great! A whole new way to look at math! Thank you!

Learned something newww todayy!! Thank u so much for your wonderful videoss! Can’t wait to share it with my lil siblings!!!

Great trick.. thanks for sharing it. Although I use a calculator every day in my work, I like to do as much math as possible in my head. Feels good when the calculator verifies it. Thanks for all the good teaching and learning that goes on at your channel. Thumbs up!

Absolutely awesome! Brilliant for any kind of maths related aptitude tests. Any chance for divison next please?

Thanks for this, you always upload things I need the day I have a test. Edit: I’m not being sarcastic

amazing video. I love how you explain it so clearly

Thanks for helping my son, he become master please keep on teaching my son is a great fan of you. God bless you

Thanks a lot it really helped me since I’m Aussie and my teachers want me to do it a specific way! Hope you have a great day.

I really wish they taught us this in primary school. this would have helped me so much. I’m so upset i’m only finding this channel now!

Great as usual!

As always, thanks for this tricks

Cant believe I'm only just finding this! This is gonna help so much in my upcoming exam :D Thank youuuu

@RBstudios10

2 жыл бұрын

Hope ur exam went ok👍

Thanks for the math tricks, really helpful

thank you so much!

Wow. Just wow. Thanks mate!

thank you tecmath

Thank you for sharing this technique☺️

I JUST LOVE YOUR MATH TRICKS

Very useful math trick Thank you so much

THIS WILL HELP ME A LOT ON SOLVING THE PERCENTAGE!!!!! Thank you soo much!!!!!! I wish i knew this before!!!!

As mentioned in other videos, if you generalise this using algebra, it makes perfect sense. A two-digit number with digits ab would be expressed as (10a+b). If you multiply (10a+b) with another two-digit number (10c+d), you will get (10a+b)(10c+d) = 100ac + 10ad + 10bc + bd You can then factor this as 100(ad) + 10(ad + bc) + 1(bd) Therefore, you multiply the units (b and d) to get the units digit of the answer You multiply the first digit of one number with the second digit of the other number (a and d), and vice versa (b and c), then add together to get the 10s digit of the answer Then you multiply the 10s digit of both numbers (a and c) to get the 100s digit of the answer But what if you wanted to multiply _3_ 2-digit numbers together, such as 54 x 26 x 38, for example? Well, this would be (10a+b)(10c+d)(10f+g) - I'm deliberately avoiding the use of 'e' for obvious reasons (i.e. Euler's number). If we expand this out, we get 1000acf + 100acg + 100 adf + 10 adg + 10 bcg + 100bcf + 10bcg + 10bdf + bdg If we factor this, we can get: 1000(acf) + 100(acg + adf + bcf) + 10(adg + bcg + bdf) + 1(bdg) We can then see the following: To get the units digits, we have to multiply the units digits of each of the answers (4 x 6 x 8 = 192 - we then write 2, and carry the 19) To get the 10s units, we need to multiply the units digit of two numbers, with the 10s digit of the remaining number. This should be done three times, each time changing which number we take the 10s digits and units digits from: 4 x 6 x 3 = 72 4 x 2 x 8 = 64 5 x 6 x 8 = 240 We then add these together, 72 + 64 + 240 = 376 We then add the 19 we carried over previously, to get 395. We then put the 5 in the 10s digit, and carry the 39. For the 100s digit, this is achieved similarly to the 10s digit, except we multiply one units digit from each number, with the 10s digit of the remaining two numbers: 4 x 2 x 3 = 24 5 x 6 x 3 = 90 5 x 2 x 8 = 80 Add these together to get 194 We then add the 39 we carried over, to get 233 We then write the 3 in the for the 100s digit, and carry the 23. Finally, for the 1000s digit, we simply multiply all 3 10s digits together: 5 x 2 x 3 = 30 We then add the 23 we carried, to get 53. We should therefore, have the answer 53352. In summary, if we simply express the 3-numbers as AB x CD x FG and the result as HIJK: H = ACF I = (BCF + ADF + ACG) J = (ADG + BCG + BDF) K = BDG And, just for the sake of it, what about a 2-digit multiplied by a 3-digit number? I shall cut out the general algebraic method and go straight to it - let's use 234 x 56 for example The units digit of the answer is the product of the units digits of the two numbers (4 x 6 = 24) - the 4 is the units digit, and we carry the 2 For the 10s digit: Multiply the 10s digit of the 3-digit number, with the units digit of the 2-digit number (3 x 6 = 18) Multiply the 10s digit of the 2-digit number, with the units digit of the 3-digit number (4 x 5 = 20) Add these to get the answer 38 + 2 (carried over from the units) = 40 - digit is 0, then we carry the 4 For the 100s digit: Multiply the 100s digit of the 3-digit number, with the units digit of the 2-digit number (2 x 6 = 12) Multiply the 10s digit of both numbers (3 x 5 = 15) Add these to get the answer 27 + 4 from the 10s digit = 31 - the units is 1, and we carry the 3 The 1000s digit is the product of the 100s digit of the 3-digit number, and the 10s digit of the 2-digit number) (2 x 5 = 10) Adding the 3 we carried, we get 13 This gives us the answer 13104 In summary, for ABC x EF = GHIJ (these represent _digits_ not variables, i.e. ABC is a 3-digit number with the digits A B and C, _not_ a product of A x B x C) G = AE H = AF + BE I = BF + CE J = CF

@nelso.1

2 жыл бұрын

Algebruh

@MDACinemas

2 жыл бұрын

Mathematical Waffle

@eshaaslam7078

2 жыл бұрын

That is a lot of typing sir/maam

@dianaalvarezlopez115

Жыл бұрын

Fgurjxvl m cxmxxmxxmxckxk m nvncncnncfcm MC m ckcxnckcckkcckkcckzxixzcxxv🎂💪🤬🤯🥶🤖🤖

Thanks really helped me

The best math channel

thanks, tecmath this was really helpfull to me :D

A fantastic way of explanation

Thanks tecmath. Mes élèves ont bien aimé cette technique pour le calcul mental

I loved this trick, It's really fast and understandable.

Thanks a ton.....this video is really helpful.👍

That accent makes the video even better!

Thank you so much for this super easy technique. Memorise the 'rainbow trick' and you are set to go...

You are gonna help me look like a math genius to my kids. Cheers mate 👍

Yes i did get the answer thank you so much learned something new today!... keep it up.

It's a great help to do my maths test easily thank you 🙏

I am using this for years this is amazing everyone 🎉

Thank you so much sir🙏🏻 You helped me a lot ❤️

Thank You so much

Fantastic thank you

First. Love these videos. Very helpful

Thank u sooooooooo much I have a math test tomorrow and I realised that I can't do two digit multiplication and this helped me so much

It's a lot harder to keep track of all the numbers in the last problem without using paper to write it down on, unlike the square root trick, lol. It took me quite a while to get the answer only using mental math (only for the last example, anyway), but then again, I am dyslexic... despite math being one of my strong suits (as well as spelling, go figure LOL). Very informative, I wish that teachers would use these kind of examples as it makes learning a lot more fun, which studies indicate strongly that students will not only have an easier time learning, but also retaining the information. Just like I still remember the old PEMDAS from the acronym used when you're given a problem with multiple equations being done in a single problem, as far as which parts of the solution are found first. (Paranthesis, Exponents, Multiplication, Division, Addition, Subtraction). I'm sure that most people here who have taken algebra still remember, "Please excuse my dear aunt Sally".

@sarhaanhusen7517

Жыл бұрын

Cool man

wonderful video

Thank you sir

Nicely explain .. common rule for any 2 digit number .. that is nice

I like it..😁 because I suck at math, but now.. I feel like I'm a part of the Math Club. Thank you. .

Genius work

you are amazing! You are like Faci of math.

Best explanation

You saved my life ❤️

Very helpful

great video!!!!!!!!!!!!

I don't know why people unlike the video this is easy and simple thx to you tec

Best teacher

Thanks

So nice and easy method

u r a literal god

Like magic and really easy to do on the fly! 10/10

Amazing

very cool!

I don’t have kids but my nephews will be appreciating this method

Good videos. You should create a mental math app

Mate, do you do any one on one tutoring? Im based in Sydney, and need some help getting ready for a military pilot test Ive got coming up, and really want to nail the mental maths sides of things. Would be awesome if you could help!

Hello, you are a very good teacher your videos helped me a lot, could you please make a video about trigonometric equations

Thats great i have never seen these kind of easi tricks before. Even i am graduated

thank you i feel like i will do better in solving my math problems thank you

@ianquin863

3 жыл бұрын

Mllujñ,lookjjjnml

This reminds me of foil method for multiplying things like (x+4)(x+2). Pretty neat

Thanku sir 😇

You're Awrsome!!!!!

I knew it there was something missing in the first video related to this one. Until I figured out you will need to carry the "tens digit" if ever you acquired a 2-digit number result for the right side.

sir...please upload few division tricks in order to do division as fast as possible. thankyou

Dude thanks so much I greatly appreciate it remember to hit the like button on this video

Thank u so much I have time table tomorrow and I think I will get 100/100 tysm . Oh help pretty much

How did I not know this? I have tried to figure it out on my own but never got it. I must not be very _____. All I can say is Thank YOU.

@leeshin6574

4 жыл бұрын

The blank says smart

hi! i got confused when i tried this set of numbers, how would you solve 89 x 77 using this method?

@yvindskjnhaug3245

3 жыл бұрын

First 7 times 9, 63. You carry the 6. Then add 8*7 and 9*7 = 56+63=119. Pull the 6 down, and you get 125. Then carry the 12, and do 8*7=56, and add the 12; 68. Then the answer is 6853. Very confusing, I know.

Have job exams coming up, found you just in time. Great lessons, big thanks from India

Super

I loved it thanx a lot friend now people will think im a genious

@lrthy

4 жыл бұрын

you can’t spell genius right

@user-oi7sf1jm3h

4 жыл бұрын

@@lrthy sry friend for mispelling im not an englishman .

@lrthy

4 жыл бұрын

oh my bad יעקב לוי

Please teach compound interest

tecmath, what program do you sue for these videos?

@Anonymous-sq3ek

4 жыл бұрын

Momo Mamo Any drawing program like Microsoft Paint will work.

This reminds me of the video where he did 3 by 3 multiplication.

Why don't they teach us in school? You made my life much easier cause I am kinda slow in calculations like this, but this helped me a lot. I can't wait to learn more!

Where have you been all my life I bro

got my exam soon binge-watching your vids

he himself cant believed he solved it.

Yeah boy!!!!

this man could save humanity someday

😚😚😚😍😍😍😍thanks a loooooot

bloody love this. I feel like Einstein now. Thank you very, very much mate.

Vedic math right here

dam big brain

Also when timesing double digits with 13 26x13 2_6 2+6= 286 26x13=286

Would u pls show how i have to follow for mutiplying 6549x8378.its a little bit different .pls show step by step.thnks