How to work the percentage of any amount instantly

This percentage trick is so easy - and you should know it if you are a regular here!
Forgotten it? That's OK...youtube and tecmath has your back - with this, the easiest way to work out percentages of an amount.
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More percentage tricks: • Percentage made easy -...

[@douglasnewman4163]

As per usual, I’m amazed that we are not taught this method in school. Your channel is such a great resource. I’m learning so much. Thanks very much!

[@huzzzer6083]

I wish you were my math teacher when I was still in school...

[@cnn-news.24]

Thanks

[@wencvr]

I love your videos.

[@kd3271]

he is my math teacher

[@Tr1f4ct]

@@cnn-news.24 same I love your vids

[@jennifercampbell-klomps5549]

I used to be scared of figures and watching this method is bringing a smile to my face again! 😁

[@242math]

knew this one tec, great refresher for those who forgot, amazing technique

[@Robbie_S]

This is helping me so much in many ways. I love your soft and kind voice. It helps to learn easy and better. I'm gonna try for other numbers now. Thank you Sir ❤️

[@anthonydesouza9983]

I found it easier to do “40% of 13” instead. Which is 10% of 13 (1.3) times four = 5.2. You mentioned this briefly with 32% of 75, but I think it deserves a mention. Always try to find the easier percent - generally the one that’s divisible by numbers like 5/10/25/etc :)

[@j.taylor3670]

I also noticed that when you do a percentage of a two digit number ending in 0 like the first two examples, it's the tens place times the percentage number then move the decimal point one space left in the answer: 13 x 4 = 52, make it 5.2.

[@LoudMinded]

It's the similar for those that don't end in 0 as well, 32 times 75 = 2400, 2400/100 is 24

[@deven2636]

@@LoudMinded if that’s the case, move the decimal.

[@alarissacamila]

I am incredibly grateful for your work. I watch it for fun now, math is so cool.

[@parmanyugodara6751]

Your tricks are pure awesome and fun Plus your voice make them more exciting

[@pax7921]

i swear your channel is a life saver i have loads of test coming up soon and this rlly helps😩

[@j.taylor3670]

I'm autistic diagnosed late in life. I loved sciences but my poor math skills kept me from pursuing them. Had there been the push as there is now in the US to get girls into the sciences and had they known about autism they would have gotten me a tutor to make up my math deficits and I would have been a researcher of some kind but alas, no. Had math been taught the way you do I wouldn't even have needed a tutor. Thank you for sharing your great work.

[@IS-py3dk]

This type of trick is also there for division of imperfect numbers I will show Lets say 15 ÷ 4 Now make different parts of number 4 as follows: 1 part of 4 = 4 2 parts of 4 = 8 3 parts of 4 = 12 Now the closest 1 we have is 3 parts = 12 To get to 15 we need 3 more than 12 which means that we do not need a full part of 4 So we will take 3 parts out of the number 4 which means we need 3/4 more than 12 So we got 3 parts of 4 = 12 and 3/4 parts of 4 So ( 3 + 3/4 ) × 4 = 15 Easy ☺

[@-The-Golden-God-]

👀

[@cmdrgrover_stw5488]

Sorry mate your lost me at imperfect numbers

[@Commentify69]

100%=40 10%=4 1%=0,4 So 5,2 BTW i found this way myself i actually try find easy ways my self.

[@cnn-news.24]

Great work. Most 'tricks' are just observations and thinking about things a tiny bit differently. Love that you do that!

[@shaileshgautam4661]

I wish I knew you in my school time. You are a great teacher sir , respect!

[@dhy5342]

It's also useful to understand that A% of B is exactly the same as B% of A. This sometimes allows for quick mental calculations. Thus, 17% of 30 is the same as 30% of 17, or .3 thimes 17 = 5.1

[@marileejoan]

I'm happy at my age to find some help with my percentages. I need more examples with your answers! It's amazing how I am disabled with solving match equations.

[@stefanm67]

Thanks so much for this. You explain it beautifully and its actually good fun!

[@TON-vz3pe]

If you are good with multiplication then you just multiple and count the decimal points using the trailing zeroes.

[@AndreSomers]

Way too complex. Percentages are just multiplications with a hidden divide-by-100 tagged on (which equals “times 0.01” ofc). So, to get 13% of 40 you do this: 13 x 40 x 1/100 => 13 x 4 x 1/10 => 52 / 10 = 5.2

[@twistmynips]

I don't have a 'maths' mind (I'm more into languages). I find his technique very clear and I can practice it step by step. However as I now understand his method I can also see your method too. I would never have been able to make the connection between the two myself.

[@tushaye2175]

Great explanation/demo...👍

[@alexnutcasio936]

An even easier way: 13 x 4 is: 52. Add decimal and you’re there. 5.2.

[@SlazeM7]

I have loved your videos ever since I was in high school.

[@johnrokosky]

I forced myself to learn a different way (MOSTLY self taught) which is not unlike your method, I really do like this, it is smooth. Basically it was to flop the numbers around until you had something to work with that was closer to 10. Such as 31% of 70, you could easily flop it around to 70% of thirty one. Sometimes I did the tenth like you. If I would have seen this video when I was 6 yo, it would have saved me many an angry night.

[@dreamer178]

you have a good deep voice

[@tapmuf3797]

Math teacher: just use my method!! you'll fail!!! techmath: no, no I don't think I will

[@cmdrgrover_stw5488]

This video has made me realise that I don't understand maths at all lol

[@listairgin]

Brilliant explanation! Thank you so much. 👍

[@user-vg2vp5yr5c]

Brilliant. I watched only the first 28 seconds to learn the trick... Multiply two numbers and divide by 100, right?

[@glendurrant3988]

So stoked that what I’m already doing is finally endorsed!! 👍🏽🇦🇺

[@philrichmond7567]

Thank you 😊

[@sharvyahmed]

You made maths more interesting by order of magnitude. Hats off! ❤️

[@tambuwalmathsclass]

Great approach

[@finhz]

I was too focused on this trick i forgot the swap method

[@SpaceWithSam]

Pure Perfection!

[@paulwellings-longmore7692]

“Nice n easy” “Not so difficult was it?” Great series

[@dathyr1]

I got my Calculator right beside me. Piece of cake doing these.

[@EnglishLad]

I got 56% of 420 wrong because I miscalculated, but your calculation is really simple. I may have to start using your method.

[@LearningwithMrsOkoro]

I use this strategy when I need to calculate in my head. I teach high math and most of my students struggle with percentages. 😔 I'm not sure when the disconnect happens, but I always do a mini lesson when I know I have a lesson covering percentages. 😉

[@jesusolmeda9124]

That was easier than school! RIGHTEOUS!

[@MrBrown4Real]

This what I should see in recommends!!!

[@samnation9887]

I use the rainbow multiplication on percentages and it works too , it’s actually pretty fast

[@samnation9887]

1x4 1x0 3x4

[@1trucxhondamov589]

Thank you, I find your channel amusing 😃👍

[@bella-bee]

How about 13 x40 =520, divided by 100 (for the percentage thingy) =5.2

[@joeanderson2024]

This is how I’d do it for a more difficult problem (such as 22% of 52) but for a problem like this (13% of 40) I’d switch the percentage number (A% of B=B% of A, or for this problem, 13% of 40=40% of 13) then do this method (1.3x4=5.2)

[@MrRickyw01]

You belong teaching teachers who teach teachers. Too many people have math issues. Some are now calling Math racist.

[@AngelJamess]

Thank you, this helped me so much!😀

[@sukritijha7067]

Awesome video thanks for making calculations faster for me!

[@soopahfly2926]

HOW DID THEY NOT TEACH ME THIS BACK IN GRADE SCHOOL?!? HATED PERCENTAGES! :(

[@tossyv]

Thank you for giving me the confidence to try this and get it right. Normally I would reach for a calculator. 🍎

[@MirageEspejismo]

This is a great trick for percentage calculations. 👍🏼

[@grolfe3210]

Additional good good trick is that you can take away parts too. So if you need 9% then it is easy to work out 10% and 1% as shown and take the 1% off the 10%.

[@mjazzguitar]

I turned it around and figured 10% of 13 and multiplied that by 4.

[@meganwilliams2962]

5.2. 10%x40= 4; 1%=.4. 4+3x0.4= 4+1.2= 5.2. Learned how to do this in Primary School in the 60s.

[@teredn3362]

You are awesome. Thanks for another great technique 🙏

[@slackhackman9115]

This chap digs alright 👍

[@codecontent]

You are a legend!

[@beverlyfletcher4458]

This is genius! Why wasn't I taught this in school?!

[@martymcfly3986]

no wonder you have over 1M subscriber, thanks a lot

[@Sam-ny1ng]

Nice work !!

[@ndjdhdhdbduxo]

your a legend mate

[@Stormbrise]

I still remember the I owe you 100 dollars. It basically also helped with word problems with percentages. Yes I see where you are coming from, and I do this in my head already. But if you sit there and try to teach me new math, I will just glare at you and walk away. Just like I still do the old chants in my church upbringing, even though I do not go to church today. Autistic, and I hate change.

[@fiskfisk33]

13% of 40 = = (40*13)/100 40*10+40*3 = 400+120 = 520 520/100 = 5.2

[@oldcountryman2795]

"Hey Google! What's 13 percent of 40?"

[@CronusandRhea]

Thank you!

[@forestknowledge]

Amazing video!!!!

[@conniedoan8145]

Great. Thank you

[@Zenas521]

I paused the video to work out the questions. 21% of 70 = X 20% of 70 = 14 1% of 70 = 0.7 14 + 0.7 = 14.7 = X 32% of 75 = X 10% of 75 = 7.5 7.5 * 3 = 22.5 2% of 75 = 1.5 22.5 + 1.5 = 24 = X 56% of 420 = X 50% of 420 = 210 1% of 420 = 4.2 4.2 * 6 = 25.2 210 + 25.2 = 235.2 = X EDIT: added spacing

[@OlympusHeavyCavalry]

Hi bud, I am wondering if you could show the calculation(s) of these type of problems using multiplication? Or, do you have another video showing this? Cheers :-)

[@MarkQub]

This is insanely smart

[@ThePreparedHomestead]

Very cool, thanks!

[@rajp5668]

great video. thank you

[@omarhameda3547]

To get 1% of 40, divide 40/100 = 0.4 Then multiply 0.4*13 = 5.2

[@Commentify69]

Thanks for all your help but i have a faster way

[@cnn-news.24]

Calculator? Alexa? Straight multiplication (you can use this - but for some reason some people find that harder!)

[@Commentify69]

@@cnn-news.24 no i acctualy do it myself well i dont use calculators and things i just like school more than the average percentage.

[@DaleDix]

There's always someone.....

[@Nazho248]

I thought a method that is multiply the number by the percentage and remove zeros until you think that is the result, for example 60% of 120, 60x120 = 7200 so i remove the 2 zeros and the result is 72, this method i use it for calculate an approximate of a discount in markets and stores when only says the percentage off

[@Tr1f4ct]

Thanks

[@aletaschulz1108]

I got them all, my friend🤗💚

[@DianebelongstoChrist]

Love it!

[@ukphillip]

love it. Although I wish he would keep the numbers aligned to the decimal place …..

[@lmaolukas8533]

can you make a video about the trachtenberg system?

[@michael42158]

"of" means "times" so just do that and move the point 2 places to the left.

[@jimc12]

When are you going to set up your virtual courses?

[@quickmathandg.i3430]

Thank you sir

[@trex5863]

Loved it 👍

[@aryaw9607]

tysm brooo

[@adhdrenalin4392]

but how else would you work this out? i thought this was the normal way

[@mrbreadgd3473]

But i have thought of a better way. It probably has been used. Say we had 26% of 60 Multiply 26 and 60 which is 1560 and divide it by 100 which is 15.6. Give it a try :) @tecmath

[@jumblestiltskin1365]

Teachers can be interesting and clever when you meet the right ones eh. I went from F grade chemistry to A grade in one year because of a teacher change.

[@MaNuMrgx]

Don't forget that 13% of 40 is also 40% of 13. So 13x(2/5) = 26/5= 5.2.... 5s😉

[@gregjohnson720]

Love your videos mate. gudonyah

[@grahamrobertson2995]

Why weren't we taught this method at school? Did they teach this method at school? Was I paying attention at school, or was I too busy looking out of the window?!

[@WendyKarma]

Or just multiply 40X13 and move the decimal over 2 to the left.

[@PageCrafters1]

Or you can use this, x% of y = y% of x Example : 4% of 75 = 75% of 4 i.e 3.

[@BlackTyeChi]

For clarity's sake, when you wrote out the fifty, five, and one percent amounts, it would have been nicer for adding purposes to have written the units, tens and hundreds (and tenths) in their allotted columns so we could add more traditionally. Or is that way a practice common to this channel? 🤔

[@lornaharkin2126]

I still can't get it 😪

[@ed9763]

Devide the %age by 100 then multiply it by the number which is 40 in this case. You can do it all in ur head. BTW where that accent comes from?😀

[@Snyhen]

How about cm to inches.

[@nathanhicks2607]

Wow! just because we know this or other ways doesn't mean others can't learn just wow......

[@gayasshaik30]

Please make video on mensuration formulas please i have an exam sir please help me

[@davideunbekannt7726]

Why does it take 7 minutes to say divide 40 by 100 and multiply by 13.

[@kawiskilupiski4990]

What is 10% of 51 ? please