Easy Multiplication trick for BIG numbers.
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- Опубликовано: 5 июн 2021
- This trick for multiplication is awesome! Multiply numbers near 100 in under 5 seconds. Remember - you don't need a clickbait title to view this - you are far far better than that! Five minutes - you havre another multiplication math trick up your sleeve!
Here is THE mental multiplication lesson playlist - progressing you through your mental multiplication.
• Tecmath's mental multi...
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My 8th grade teacher taught me this, he said we would need to use this all our lives.
6 months off 50 and can call bullshit on that lol.
@@DaleDix this was a long time ago and the teacher was right. I have used the many shortcuts he showed me a lot.
@@brickmason7301 This looks easy with numbers in the 80-100, but much harder to do 43X32. Can you do 43X32 as fast??
@@jackh577 I multiplied 43 x 30 + 43 x 2 and got the answer in less that 10 seconds. I was fortunate that I had the same teacher 2 years in a row and he taught algebra but made sure we learned math we would use constantly. He did the same thing with addition.
@@brickmason7301 So how did you solve 43 X 32??
I recently turned 20 and I’m in the process of taking ENEM (big national test here in Brazil to get into university) and these kinds of videos are a BIG help because it helps me finish “medium” questions faster so that way I’ll have more time for the other math questions. Thank you so much! ❤
dayyumm
Hey, is the test similar to SAT?
@@abshariadam Hmm I haven’t seen enough SAT questions to answer that question but my guess is that they are similar
@@JAUNEtheLOCKE the government here in Indonesia implements the method similar to SAT
It has been many moons since I’ve done any math. Really glad they have these refreshers and tricks. Never stop learning and reviewing.
Man you are a gifted math teacher.. wish all teachers taught this in the 1970's
How much thought you put in these lessons are incredible! Very appreciate it
Those math tricks are amazing, thank you, sir.
You continue to amaze me. I have been watching and learning for a long time now and I will be teaching my kids when they are of age. I'm sure they will enjoy maths a lot more than I did.
Thank you
Exactly
This guy has better explanation than my teachers
@@Neko-wp7mu yea those boring fu*king teachers would teach us to multiply for decades
As others said, this works well if both your numbers are close enough to base 10 numbers. Also, this will work only with few special combinations, where both the multipliers are having a additive/substractive relationship.
thats why when im multiplyin 48 x 79 it will not works lol
Anytime I have a math presentation due in school but don't know what to do, I just come here. Never disappoints!
Very cool. Thanks for the solid tutorial about these math tricks that i think everybody should know about.
Damn I'm blown away watching this as an adult and I wish I had this channel when I was a kid. Loving it
Well i am sitting in classes and this video just got released before my Math Lesson 😃😃😂😂
Thats literally the best timing ever lol
Video Is Pure Perfection! Attentive + Informative at the same time!
Thank you
Excellent . Thanks so much for your time!
Fantastic maths! And you have an really soothing voice as well!
I love your videos, some great tricks for sure.
Thanks ur helping me a lot with math so when I finish my break that I’m on I can be even better I always thought I knew math fully and it was easy but ur teaching me struggle I’ve never seen
Thanks so much i needed help doing muplication like this
That’s unbelievable lol. I have never heard of this method, now I can’t stop doing sums 😂
Thankyou for making this easy!
Thank you so much!
This is crazy! It's easier to remember. Thank you for the hack 😊
Awesome video!
Great teacher. Thank you
Thanks Techmath you are a life saver
Thank you so much. This is a big help.
Just Subscribed!God bless you 🙏🏻
So cool! I wish I knew this sooner!
I wish videos like this were available in the 1980s. Thank you for creating this channel. This is great for my kids who love maths. I am a lifelong student who loves to learn new and better ways of doing things. Great students are created by capable and engaging teachers.
Your old
@@2oqoz that's not very original
You have the best math tricks!
Dude you are brilliant!
Thank you so much for this :) very helpful :)
Wow! Amazing!
I learned so much from this ❤
Thank you 😊
Thank you bro
Awesome dude
New trick x old dog = 😊🎉 Thank you for the fun to learn videos!!
Thanks!
Maths was the most sweetest subject for me in the school. No calculators no devices but we were all doing pretty good. If I knew this trick 25 years ago I could be the king of class !!!
Thank you ❤
Awesome shortcut!
Love your vidoes
Very clearly explained thank you so much for sharing your valuable knowledge stay blessed
It"s amazing, thank you sir.
Thank you!
It's literally 4 in the morning as soon as I was about to close my eyes I Got a notification. I guess I can sleep later
Wow this is amazing.tq
That is magical 🥰
Thank you Thor
Mind. Blown!
Thank you
omg this helped me so much thank you keep it up
Glad it helped!
no problem i used this on my finals but I couldn't find the video so I'm here to tell u thanks for letting Me pass@@tecmath
Amazing!
Brooooooo.
It was reallly goood. thank you ver much
You make my life so easy. Thank mate.😊😊😊😊👍
Thanks
Awesomeness 👍
The algorithm got me im subscibed
Thamks again for making math simpler than it I anyone could know it
How do people even find so many shortcuts？
Saving all of these vids for my daughter. Thank you! I'm so happy she's going to be better at math than me!
Yay good one! :D
Why not be both good in fast calculations? Helps a lot with staying sharp at an old age
why isn't this taught in school! Life/grade saving! 👍👏🤗
In high school, I would come up with shortcuts in math, and the teacher was against it.
@@vidtuby Yes, i found a way to shorten the working out of Calculas, and was marked down as the right answer, but no working out on paper, as I did it in my head. back in 1987.
i love u !!!!!!!!!!!!!!!!!!
u just saved me i have an exam in a few days hehehe
Very cool! I didn't do that trick in school.
I have always struggled with maths, now this is making it easier and more fun
Same here. At school I felt like I was in a foreign language class because I didn't understand a damn thing the maths teacher was saying
Good trick
These are marvelous. Thank you!
Tecmath, you sound roughly my age, and i want to tell you i've searched the internet for a channel like this for many years (i love calculating). So thank you so much for devoting the time and helping me.
Thanks Yonatan. How old do I sound?
@@tecmath like in your 40s
That's correct!
@@tecmath oh oh, i sense a trap which im about to fall into. Well, youre not a woman so im allowed to be honest with my answer without insulting you (if you were a woman i'd say you sounded... 18 years old, and weighed 41 kg). So my final answer is you sound like the square root of 1936 years old
i also stated today in a different video of yours that your donation link is broken. i want to donate but not monthly in Patreon
This guy is a legend
Love it
Dude your tricks are so usefull.... As soon as your new video comes out i leave all my work to see this... I am a student so your videos help me out a lot♥️♥️
Which class ??
I am in 8th
@@IS-py3dk 11th
Thanks mate.
It will help you a lot for what? Exams?
Tysm
😆😆😆💚🤗
Such fun! I am playing with this technique until it becomes second nature.💚🤗
The reason this works is due to the infinity stones.
That last example of 88 × 104 just cleared my doubt as well
Thank you sir for this awesome trick 😊
I made sure to include one like that! In glad it helped!
@@tecmath l don't know how it works please explain me the last minutes what happened 🙏👏
🇬🇧IF👀 only I had been taught this 70+ years ago when I was good art & enjoyed maths!. . Don’t get OLD🤬🇬🇧
The options are not great...
Sheesh your old
Dang 💀
Never too late to do what you like.
WELL EXPLAINATION SIR 🙋🙋🙋
I have just subscribed after watching this excellent tip. As a private tutor, I found this it to be a great help, especially as maths is my weakest subject. However, where it gets tricky is when the numbers are `not' so close to 100, such as 79 x 53 = 4187?
👀, thank you!
Amazing
@tecmath What quantity do the numbers have to pass in order for this trick to work?
I subbed. So who taught you these great insites? Self taught or taught?
Your great
Me: "Multiplication It's now easy to find your Answer so why can't you? "Multiplication:" Because i I want you to"
I just have to applaud you. Where and how do you know all this????
The explanation of the first example ( you can also use to prove the other ones):
89 x 94 = ( 100 - 11 ) x ( 100 - 6 ) =
100 x 100 - 100 x 6 - 11 x 100 + 11 * 6
100(100 - 6 - 11) + 66 = 8300 + 66
(100 - 6 - 11) this is the part that gives us how many hundreds we have ( 83 * 100 ) = 8300
And 11 * 6 remaining part.
Is this the way you were taught or did you figure this out for yourself somewhere outside of school? This is great. 👍
After getting spanked by my mother for not being able to figure out how many seconds in a hour I came to this channel.
Sir i have watched every video of of tecmath and really i applied and use them in my mock test
Even the early, monotone, powerpoint ones? 🤨
@@tecmath so you know the reality thats why ur reminding me to watch them 😂
@@tecmath but yeah atleast i have watched many videos of math tricks and really i got good marks in maths section due to time saving
Wow that's make life lots easier
this is going to make me a walking mansize calculator...this will make me a math addict...
thank you!!! 😀
Sir your tricks are really very great.. I'm from india 🇮🇳... And i genuinely loved this..... I'm so thankful to. You 🙏🏻 ❤
Just wow😮😮
Oh my. This is what I should be teaching my kids
Jesus Mary Jospeph & the wee donkey....that's amazing!
This way of doing math has never been taught to me...
I like how your way has opened my mind on seeing these equations differently.
Awesome work my good sir.
Thanks. But have you done your homework? Why does it work?
Because it’s a stupid way to do multiplication. Your school taught you the correct way.
@@oldcountryman2795 school taught me the right way??
Firstly, what does that even mean? If you get the right answer, then how is that wrong.
Secondly, if I was shown how to do math the way this guy does, then I wouldn't have had to take pre-algebra 3 times in college just to move on from my pre-requisites!
Bye!
@@vivica8207 Schools can tell all the things. But do you only use these tricks for exams?
@@oldcountryman2795 The multiplication way you're saying stupid to do multiplications, also has a reason for its working. It's also related to other mathematical identities. If you say these are stupid then don't use (a+b)^2=a^2+2ab+b^2. And then see. Everything has a reason to work, obviously. Schools are just not updated to the level of using these identities as easy multiplications, divisions, subtractions, and additions.
Can you do a video where you multiply 2 different bases together?
This man has taught me how to do large multiplying he kno2 how to make it work it is easy to learn
But what about completely different numbers
Can you do 54x83 for example with the same logic ? If you try to use a base in the middle like 70 then does it work?