Solve Percentages in Your Head in seconds -» Easy Percentage Trick

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tecmath

tecmath

Күн бұрын

Пікірлер: 156
@tecmath
@tecmath 8 ай бұрын
More percentage tricks here kzbin.info/www/bejne/eJLLe3qtor1qaZIsi=-L_boaMvGp5scFMI
@Lifesaver7741
@Lifesaver7741 2 жыл бұрын
It’s a always a good day when my math dealer uploads
@randomnessltd
@randomnessltd Жыл бұрын
Very informative. Very basic, I like that. Back in school, we had this whole thing where we would break down a larger percentage into smaller parts, then add them together. But that's the opposite of the common phrase "work smarter, not harder". Math, just like many other aspects of life, can be broken down, but not necessarily always into the smallest bits possible.
@TandemKnights
@TandemKnights Жыл бұрын
I wish I had a math teacher like you when I was in school, amazing stuff!
@hemachandravadlakonda4666
@hemachandravadlakonda4666 2 жыл бұрын
Love how you show the quicker methods unlike most teachers, who expects us to use the longest methods
@BD-xz6te
@BD-xz6te 2 жыл бұрын
I learn something useful every time I watch one of your videos. Math always came relatively easy to me but I despised the way it was taught in school. There was always this attitude that there was just one way to solve any particular problem and that always seemed to be the most convoluted overly complicated way imaginable. Math teacher. "Oh, you need to get to the second floor? You need to start digging a tunnel north, then collect the material you need to make clay. Build a kiln and make bricks. Then you use the bricks to build a temple. Draw people to your temple and create a religion. Form a society around your new religion and build a city. Once there are enough people and enough of an economy for people to specialize start mining metal. Proceed along the technological progression until you develop faster than light travel, then come in from outside the plane of ecliptic and land on the 2nd floor." I exaggerate but not nearly as much as you might think. My "Why not just walk up the stairs?" questions were never well received. I'm always happy for someone to point out another set of stairs (or an escalator).
@Dontcopit
@Dontcopit 2 жыл бұрын
Hi mate, I am teaching my child, math, from the Trachtenberg System via Speed Math for Kids 2. In fact I was teaching some of my oppos in the Australian Military, the same back when I could see. See one, Do One, Teach One. Having said that, Ive been watching your videos for some time, and they're wonderful. I am making Playlists for my daughter so that she can watch them in her own time. I however am Disabled, and since my last spinal fusion I have become blind in one eye, and photosensitive, hence where once my problem was needing a 1 inch wide pen, hence my University Math I had to do on Whiteboards (well my last exam anyway), now however, I have to live in Dark Mode, hence Ive had to buy professional UV lights and I am reduced to using the same solution on a black glass whiteboard, still waiting for the second. Its taken me 5 years to get to the point where I have my system in Darkmode, and not everything I can see. So was wondering if you might consider doing your videos in blackboard style again, black background, bright colours. Would help me, help her, better. Thank you if you see this, I appreciate all of these videos. I used to be able to deploy a KZbin invert colours plugin, but its gone now. I cant look at them for any more than a few seconds or without sunglasses which never helps much, its kinda like staring at the sun. Anyway, if you could, Id appreciate it. I dont want to stuff up your work flow so I get it if you cannot. Cheers
@valentinomollard1254
@valentinomollard1254 3 ай бұрын
You are simply amazing.
@Whatdoyouwantfromme255
@Whatdoyouwantfromme255 11 ай бұрын
You help me so much in my upcoming tests and for my SATs. Thank you so much for everything you do!
@fulyadincer5492
@fulyadincer5492 12 күн бұрын
You are great! I always thought I could never do these in my head but here I am doing it and it feels natural 🙌
@nancymoore8026
@nancymoore8026 2 жыл бұрын
Thank you so much!!! THIS IS SO FUN!! Have a great day!
@garynelles
@garynelles 2 жыл бұрын
This is how I did it in elementary school. It was so fast I was always accused of using a calculator on tests or cheating on tests (even by the teacher). When I taught the teacher what I was doing she couldn’t believe it was so simple!
@tecmath
@tecmath 2 жыл бұрын
That's awesome. I love it when my students track me stuff (all the time!).
@sxlar240hz
@sxlar240hz 2 жыл бұрын
@@tecmath LOVE YOUR VIDEOS,keep up the work!!!!!😀😁🤣
@serenewaves2671
@serenewaves2671 2 жыл бұрын
Your voice is so soothing to ear, and your explanations are superb. Your voice makes it so easy to understand the concept. Your channel is the best.
@ThePiMan0903
@ThePiMan0903 2 жыл бұрын
I'm glad I found your channel sir! Your explanations are very clean and clear. Thank you so much!
@ThePiMan0903
@ThePiMan0903 2 жыл бұрын
@@SuperYoonHo Thanks! I'm also just out here learning and improving more on math as well as looking for ways on how I can teach math better.
@SuperYoonHo
@SuperYoonHo 2 жыл бұрын
@@ThePiMan0903 👍👍👍Good work
@stansmith7445
@stansmith7445 2 жыл бұрын
Clean? Well where are the dirty ones? 😏
@patricia1468
@patricia1468 2 жыл бұрын
I love it! Thank you!
@olspanner
@olspanner 2 жыл бұрын
Me too!
@tecmath
@tecmath 2 жыл бұрын
Thanks :)
@veltedingel
@veltedingel 2 жыл бұрын
Thank you so much! Incredible video and super intuitive
@accolad
@accolad Жыл бұрын
Love the ease of how you teach .
@mexico4915
@mexico4915 2 жыл бұрын
Just another great video i love it its beautiful move Thank you so much sir.
@LudwigSpiegel
@LudwigSpiegel 2 жыл бұрын
Thanks for sharing!
@najlaamh3176
@najlaamh3176 2 жыл бұрын
Thanks for making math enjoyable
@testopatia106
@testopatia106 2 жыл бұрын
Just a great way to start my day thank you.
@pglove
@pglove 2 жыл бұрын
For the 3rd one it’s the same as 90% of 9. Double & Halve. 9x9, move the decimal. Great video! I think you’re like a coach, give us the tools to exercise our minds. How about some side videos with extra practice questions to accompany the main ones?
@jaredgarcia8564
@jaredgarcia8564 2 жыл бұрын
I used basically all of his methods when I solved them but I like yours for the 45% of 18. It's clever in a way I wouldn't have thought of
@Ms_Rhind
@Ms_Rhind 2 жыл бұрын
Thank you. I initially became confused when he explained that part. It is much easier to work out 90 percent of 9 than 5 percent of 18.
@Ms_Rhind
@Ms_Rhind 2 жыл бұрын
I understand what he means now. Instead of working out 5 percent of 18. It is easier to double the percentage to 10 percent and halve the 18 to 9 to get the same answer of 0.9 to then subtract 9 from 0.9 to equal 8.1. Your way is still easier and more efficient though.
@pglove
@pglove 2 жыл бұрын
@@Ms_Rhind percentage calculations become much simpler when you realize it’s just multiplication and moving decimal points. I find 4.5 x 18 easier than 45 x 18. Not sure why.
@sawyerdave1
@sawyerdave1 Жыл бұрын
Loving these videos, you do sound so happy throughout 😊
@ghoulbuster1
@ghoulbuster1 2 жыл бұрын
It works! Amazing!
@thatguygeo249
@thatguygeo249 2 жыл бұрын
Great method, thank you for sharing.
@jrsuk1170
@jrsuk1170 2 жыл бұрын
I broke it down to 10% then x 6. Your way is easier for me 👍
@kaylacastroo5376
@kaylacastroo5376 23 күн бұрын
josh you're so awesome ily
@cookiescream2344
@cookiescream2344 2 жыл бұрын
Omg thank you soooo much I’m actually horrible at percentages but now I’ve got it Think I can pass my next maths test now 👍
@lewismorris3348
@lewismorris3348 Жыл бұрын
Love you man thanks
@TigbemilekeOjo
@TigbemilekeOjo Жыл бұрын
Thank you so much for making this!
@abhiramms2489
@abhiramms2489 Жыл бұрын
I love this one Seriously thank you sir!!
@Chantel-n3p
@Chantel-n3p 5 күн бұрын
Love it all!!! If you are opened I need a maths tutor
@byeukanlos8470
@byeukanlos8470 2 жыл бұрын
Really good method!
@julians9070
@julians9070 2 жыл бұрын
Happy New Year Josh. All the best for 2023 and I am always delighted to relearn maths tricks. Another year into maths appreciation.
@brigitteleafbarnes1441
@brigitteleafbarnes1441 2 жыл бұрын
Love 😍 it!
@Madlands69
@Madlands69 2 жыл бұрын
Beautiful little trick there mate
@tecmath
@tecmath 2 жыл бұрын
Thanks.
@solasolasare
@solasolasare Жыл бұрын
Thanks for a new method!
@sadiegrater
@sadiegrater 11 ай бұрын
Great channel! It would be awesome to have a quick screenshot of more practice questions at the end :)
@MyrddnWllt
@MyrddnWllt Жыл бұрын
Thank you 🙏
@dheerajsah4080
@dheerajsah4080 Жыл бұрын
It was quite good, thanks
@Rxsaluv
@Rxsaluv Жыл бұрын
Omg that was so helpful thanks
@Princessdalya-vn8rm
@Princessdalya-vn8rm 9 ай бұрын
Thank you so much sir, for your help
@friend757
@friend757 2 жыл бұрын
Love it.
@_Alice_366
@_Alice_366 6 ай бұрын
Thank you very much
@Jono.
@Jono. Жыл бұрын
This was neat. I’ve always wanted to know more tricks for percentages and I have completed past differential equations and work as an engineer lol
@Calin0uchka
@Calin0uchka 2 жыл бұрын
Great video :).
@peachdarvall2090
@peachdarvall2090 2 жыл бұрын
Hi, my daughter loves your clips, thanks so much. Right now she is struggling with Index Law and Logarithms in year 10 maths. We live in Lismore and these classes were disrupted by the flooding. Unfortunately her teacher refuses to listen to the classes repeatedly requests for this info. Would you be willing to post videos teaching this? Please?!
@jomyfrancis9927
@jomyfrancis9927 3 ай бұрын
thank you bro i solved t in like 5 seconds gonna help me in my sats
@j.robertsergertson4513
@j.robertsergertson4513 2 жыл бұрын
Now you gave away my stun the cashier trick .
@tecmath
@tecmath 2 жыл бұрын
Shhh. I only told you guys...
@timmmystar
@timmmystar 2 жыл бұрын
Bloody legend!
@gallium1
@gallium1 2 жыл бұрын
OMG TYSM!
@marcyking461
@marcyking461 2 жыл бұрын
I set my equations up a bit differently, using cross multiplication to achieve my answers. For example in the case of 30% of 61. I set my equation up to read 1/30 is proportional to 61/100, then I cross multiply and divide to obtain my final answer. Thus, (30 x 61) /100 = 1830/100 = 18.3.
@titusonaga-sb3uw
@titusonaga-sb3uw Жыл бұрын
Thank you so much, I understand your explanation well than his.
@titusonaga-sb3uw
@titusonaga-sb3uw Жыл бұрын
I love your teaching, u are the best teacher.
@JonDingle
@JonDingle 2 жыл бұрын
Brilliantly easy. They didn't teach this kind of maths at my school when l was a kid.
@tecmath
@tecmath 2 жыл бұрын
Nor me. We were taught to mindlessly follow a formula.
@johnmoser2689
@johnmoser2689 2 жыл бұрын
Great math tricks
@ramanarlv
@ramanarlv Жыл бұрын
I love it !!, I love you , Everything is beautiful
@crazebamm
@crazebamm 2 жыл бұрын
"Is that how you did it" NO lmao im so dumb. I love your videos man. Keep it up!!
@Fret-knot
@Fret-knot 2 жыл бұрын
Everything is beautiful
@peterstrafer3329
@peterstrafer3329 2 жыл бұрын
Did it the way you originally showed!
@jazzbuilder
@jazzbuilder 2 жыл бұрын
This guy is the legit oversimplified for mathematics
@Константинос-х1у
@Константинос-х1у 2 жыл бұрын
Oh wow, I was doing this intuitively, the first example you showed I did it exactly like that.. But it didn't take me 5s, more like 30 lol😅
@SendFoodz
@SendFoodz 2 жыл бұрын
this is honestly game changing!!
@helloworld11115
@helloworld11115 Жыл бұрын
NICE
@RithwikVadul
@RithwikVadul Жыл бұрын
I do like this already
@plonjart
@plonjart 2 жыл бұрын
the way i did it was by doing 3 x 6.1, 9 x 81, and 4.5 x 1.8 respectively
@ajsaddler457
@ajsaddler457 23 күн бұрын
Love ya
@kacpergierycz677
@kacpergierycz677 3 ай бұрын
It's cool
@yiliu6462
@yiliu6462 3 ай бұрын
You teach better than my mom 😂
@WahrheitMachtFrei.
@WahrheitMachtFrei. 2 жыл бұрын
I wish you'd taught me maths at school, I wouldn't be bad at it and scared of it.
@tecmath
@tecmath 2 жыл бұрын
Thanks.
@Memorablechannel
@Memorablechannel Жыл бұрын
Plz bring something on log ,antilog🙏🙏🙏🙏
@Lloyd1885
@Lloyd1885 Жыл бұрын
I did it using your example, 50% of 61 = 30.5 10% 0f 61 = 6.1 added together comes to 36.6...double the amount, which is obviously wrong, but why?
@oliviazeiden8463
@oliviazeiden8463 Жыл бұрын
When you add the 50% and 10% calculations together you end up with 60% of 61 instead of 30% of 61
@jonathanrobinson73
@jonathanrobinson73 2 жыл бұрын
ok ...i love you 🤣
@mnageh-bo1mm
@mnageh-bo1mm 2 жыл бұрын
wow, for the first time in my life i understand maths 😭😭😭😭
@athirap-sr7ut
@athirap-sr7ut Жыл бұрын
👏🏻👏🏻
@smoath
@smoath 2 жыл бұрын
👍🏻
@basilkhouli5670
@basilkhouli5670 Жыл бұрын
I would have done 6x4= 24; 6x2=12 Carry the 1: 25.2% Same works for say 7% of 212: 7x2 = 14; 7x1 = 7; 7x2 = 14 (carry the one again) You get 14.84%
@honey-wn5vt
@honey-wn5vt Жыл бұрын
what i do is to find 60% of 42 i put a decimal point so i do 4.2 x6= 25.2
@321afyr
@321afyr Жыл бұрын
where was this when I suffered in middle school
@Meliitak
@Meliitak 10 ай бұрын
No matter what the procetage is, I always divide the number on a 100 pieces then multiply with a given procentage
@johnathanwilko2922
@johnathanwilko2922 2 жыл бұрын
9 divided by 10 = 0.9. Yes. But how does that equal 5%??? 10% of 18 = 1.8% and half that to get your 5% of 0.9
@monkeypawism
@monkeypawism 2 жыл бұрын
I've been trying to figure this out too?
@tecmath
@tecmath 2 жыл бұрын
You're last sentence is correct and an equally valid way of working out 5%. 50% of 18 is 9, so 5% is 1/10th of this... 0 9
@user-bo3mp8un6c
@user-bo3mp8un6c Жыл бұрын
I love it. I love you. Everything is beautiful.
@Dyanosis
@Dyanosis 2 жыл бұрын
Another, relatively easy, way is this: 42 * 60% = 42 / 10 * 6 = 4.2 * 6 = 25.2
@kfjfkeofitorhf9520
@kfjfkeofitorhf9520 Жыл бұрын
42×40=16,8 42-16,8=25,2
@markallen2984
@markallen2984 Жыл бұрын
When I was in school I would actually do these type of shortcuts but even though I would get the right answer my math teacher would reprimand me for not doing it properly or showing the work.... Consequently, I lost interest in math in math class because there was no way to be creative. I ended up regarding math as Orthodox, routine and full of drudgery.
@rorigillmore141
@rorigillmore141 2 жыл бұрын
ay i accually got those 3 the same way he did. im genius
@DragonUdo
@DragonUdo 9 ай бұрын
I got the first 2 Right did the second one differently than you, did the third one differently than you and got it wrong by a little bit. I got 7.9 I realize now that when I broke it in to 25% and 20% that my calculation per 20% was just wrong is all. Oops lol
@In2oil2
@In2oil2 Жыл бұрын
I did but a little differently.. I multiplied 6x 4= 24. and the .2x6= 12. so 24+1.2. 25.2
@DougieL
@DougieL 2 жыл бұрын
I was always told I was bad at maths. Perhaps my teachers should have beenn told that they were bad at teaching maths...? (After the first example I did all 3, the same way as you then did...)
@Cube8810
@Cube8810 2 жыл бұрын
Or you can times 60times40 that is 240 6 times 2 equals 12 240 plus 12 252 dived by 100 25.2
@krunoslavregvar477
@krunoslavregvar477 2 жыл бұрын
25.2
@AliG.G
@AliG.G Жыл бұрын
90% of 860 I did it by cancelling 2x0s and 9x86 = 774
@softbrewed
@softbrewed Жыл бұрын
the 5% is still so confusing to me for some reason
@Islamic_suzy123
@Islamic_suzy123 2 ай бұрын
you could just divide by 2 to find 5%
@Bozemanjustin
@Bozemanjustin 2 жыл бұрын
For 90% I still found it easier to just take 10% and multiply by 9
@gb9276
@gb9276 2 жыл бұрын
For 90%, I find it easier to subtract 10% from 100%. God bless!
@tecmath
@tecmath 2 жыл бұрын
Thanks. Thank you for sharing.
@ricos1497
@ricos1497 2 жыл бұрын
You found 86 x 9 easier than 860 - 86? Funny how the brain works.
@Reachermordacai
@Reachermordacai 2 жыл бұрын
I did number 2 like 50% and 10% x 4 :S
@alexnutcasio936
@alexnutcasio936 2 жыл бұрын
Too many steps, you can do it in your head in less than 5 seconds….
@dskywalker3397
@dskywalker3397 2 жыл бұрын
Always use BASE 10!
@alexnutcasio936
@alexnutcasio936 2 жыл бұрын
Don’t need base 10 here….
@Chadmurdock6114
@Chadmurdock6114 Жыл бұрын
18.7% 344% 8.1%
@charleslennon1
@charleslennon1 2 жыл бұрын
H.S.!
@NubiefromAustralia
@NubiefromAustralia 2 жыл бұрын
Are you british???
@logann001
@logann001 2 жыл бұрын
Sounds Australian
@suzanneedmonds1566
@suzanneedmonds1566 2 жыл бұрын
He is Australian.
@ghoulbuster1
@ghoulbuster1 2 жыл бұрын
He is martian
@tecmath
@tecmath 2 жыл бұрын
I'm from West New Zealand (aka Australia)
@suzanneedmonds1566
@suzanneedmonds1566 2 жыл бұрын
@@tecmath Kiwi did briefly cross my mind but no Kiwi twang...as an Aussie living in the US 99% of the time people think I am British. Interestingly though, anyone I have met here who is British folk think they are Aussie. When students try to mimic my accent they never, ever sound Australian but more British. It took me some time to realize they weren't making fun of me but that is what they hear when I talk.
@MrWarlech
@MrWarlech 2 жыл бұрын
I have a method to My method it's nama BRUVpercent Example 20% of 79 20%X79\100 =158\100= 15,8 PROOF 15,8×5= 79 The formula Is Percent×the number:100
@MrWarlech
@MrWarlech 2 жыл бұрын
Love from indonesia
@kfjfkeofitorhf9520
@kfjfkeofitorhf9520 Жыл бұрын
79×80=63,2 79-63,5=15,8
@tonyflamingos5428
@tonyflamingos5428 9 ай бұрын
This made me very confused you should try to explain better in the next video
@gnarkilleptic4871
@gnarkilleptic4871 Жыл бұрын
I hate math so much
@jopflah416
@jopflah416 2 жыл бұрын
6 times 4.2 is quicker and easier.
@JG-tx7mt
@JG-tx7mt 2 жыл бұрын
Do you always multiply the 1st two numbers no matter how high the number? Ex. 2473 would you multiply by 2.4?
@heardukey
@heardukey 2 жыл бұрын
@@JG-tx7mt that’s a whole another number my guy, keep all the numbers
@Doktor47
@Doktor47 2 жыл бұрын
@@JG-tx7mt No.. assuming you're looking for lots of 10%, you'd multiply by 247.3
@jamesrichardson-king9359
@jamesrichardson-king9359 2 жыл бұрын
Jopflah No it isn’t quicker 🙄
@jamesrichardson-king9359
@jamesrichardson-king9359 2 жыл бұрын
It must really annoy you with all these twits trying to better you👍
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