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

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  • čas přidán 1. 08. 2024
  • Solving percent problems is easy. By using this percentage trick to easily break down the percentage into different parts, you can solve percentage problems in your head in a matter of seconds.
    This trick also is explained so you will know what you are doing and have a deeper understanding of what percentages are and how to solve them.
    To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU
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Komentáře • 147

  • @tecmath
    @tecmath  Před 3 měsíci

    More percentage tricks here
    czcams.com/video/BahJGwmX730/video.htmlsi=-L_boaMvGp5scFMI

  • @Lifesaver7741
    @Lifesaver7741 Před rokem +14

    It’s a always a good day when my math dealer uploads

  • @randomnessltd
    @randomnessltd Před 6 měsíci +3

    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 Před rokem +5

    I wish I had a math teacher like you when I was in school, amazing stuff!

  • @hemachandravadlakonda4666

    Love how you show the quicker methods unlike most teachers, who expects us to use the longest methods

  • @Whatdoyouwantfromme255
    @Whatdoyouwantfromme255 Před 6 měsíci +1

    You help me so much in my upcoming tests and for my SATs. Thank you so much for everything you do!

  • @nancymoore8026
    @nancymoore8026 Před rokem +2

    Thank you so much!!! THIS IS SO FUN!! Have a great day!

  • @veltedingel
    @veltedingel Před rokem +2

    Thank you so much! Incredible video and super intuitive

  • @accolad
    @accolad Před rokem

    Love the ease of how you teach .

  • @SendFoodz
    @SendFoodz Před rokem +2

    this is honestly game changing!!

  • @serenewaves2671
    @serenewaves2671 Před rokem +1

    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.

  • @testopatia106
    @testopatia106 Před rokem +1

    Just a great way to start my day thank you.

  • @Dontcopit
    @Dontcopit Před rokem +5

    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 CZcams 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

  • @BD-xz6te
    @BD-xz6te Před rokem +2

    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).

  • @LudwigSpiegel
    @LudwigSpiegel Před rokem +2

    Thanks for sharing!

  • @garynelles
    @garynelles Před rokem +13

    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  Před rokem +7

      That's awesome.
      I love it when my students track me stuff (all the time!).

    • @sxlar240hz
      @sxlar240hz Před rokem +1

      @@tecmath LOVE YOUR VIDEOS,keep up the work!!!!!😀😁🤣

  • @ThePiMan0903
    @ThePiMan0903 Před rokem +4

    I'm glad I found your channel sir! Your explanations are very clean and clear. Thank you so much!

    • @ThePiMan0903
      @ThePiMan0903 Před rokem +2

      @@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 Před rokem +2

      @@ThePiMan0903 👍👍👍Good work

    • @stansmith7445
      @stansmith7445 Před rokem +1

      Clean? Well where are the dirty ones? 😏

  • @cookiescream2344
    @cookiescream2344 Před rokem +2

    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 👍

  • @mexico4915
    @mexico4915 Před rokem +3

    Just another great video i love it its beautiful move Thank you so much sir.

  • @sawyerdave1
    @sawyerdave1 Před 8 měsíci

    Loving these videos, you do sound so happy throughout 😊

  • @thatguygeo249
    @thatguygeo249 Před rokem +1

    Great method, thank you for sharing.

  • @TigbemilekeOjo
    @TigbemilekeOjo Před rokem

    Thank you so much for making this!

  • @user-hm6tg4bf1u
    @user-hm6tg4bf1u Před rokem

    Thanks for a new method!

  • @ghoulbuster1
    @ghoulbuster1 Před rokem +1

    It works! Amazing!

  • @julians9070
    @julians9070 Před rokem

    Happy New Year Josh. All the best for 2023 and I am always delighted to relearn maths tricks. Another year into maths appreciation.

  • @lewismorris3348
    @lewismorris3348 Před 9 měsíci

    Love you man thanks

  • @dheerajsah4080
    @dheerajsah4080 Před 9 měsíci

    It was quite good, thanks

  • @byeukanlos8470
    @byeukanlos8470 Před rokem +1

    Really good method!

  • @najlaamh3176
    @najlaamh3176 Před rokem +3

    Thanks for making math enjoyable

  • @abhiramms2489
    @abhiramms2489 Před rokem

    I love this one
    Seriously thank you sir!!

  • @MyrddnWllt
    @MyrddnWllt Před rokem

    Thank you 🙏

  • @_Alice_366
    @_Alice_366 Před měsícem

    Thank you very much

  • @Princessdalya-vn8rm
    @Princessdalya-vn8rm Před 4 měsíci

    Thank you so much sir, for your help

  • @sadiegrater
    @sadiegrater Před 5 měsíci

    Great channel! It would be awesome to have a quick screenshot of more practice questions at the end :)

  • @Jono.
    @Jono. Před 6 měsíci

    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

  • @patricia1468
    @patricia1468 Před rokem +5

    I love it! Thank you!

  • @friend757
    @friend757 Před rokem +2

    Love it.

  • @Rxsaluv
    @Rxsaluv Před rokem

    Omg that was so helpful thanks

  • @pglove
    @pglove Před rokem +10

    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 Před rokem +2

      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

    • @suzannerhind9307
      @suzannerhind9307 Před rokem +1

      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.

    • @suzannerhind9307
      @suzannerhind9307 Před rokem +1

      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 Před rokem

      @@suzannerhind9307 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.

  • @brigitteleafbarnes1441
    @brigitteleafbarnes1441 Před rokem +2

    Love 😍 it!

  • @gallium1
    @gallium1 Před rokem

    OMG TYSM!

  • @jrsuk1170
    @jrsuk1170 Před rokem +3

    I broke it down to 10% then x 6. Your way is easier for me 👍

  • @timmmystar
    @timmmystar Před rokem

    Bloody legend!

  • @peachdarvall2090
    @peachdarvall2090 Před rokem +2

    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?!

  • @j.robertsergertson4513
    @j.robertsergertson4513 Před rokem +2

    Now you gave away my stun the cashier trick .

    • @tecmath
      @tecmath  Před rokem

      Shhh.
      I only told you guys...

  • @Calin0uchka
    @Calin0uchka Před rokem

    Great video :).

  • @Madlands69
    @Madlands69 Před rokem +1

    Beautiful little trick there mate

  • @johnmoser2689
    @johnmoser2689 Před rokem

    Great math tricks

  • @JonDingle
    @JonDingle Před rokem +1

    Brilliantly easy. They didn't teach this kind of maths at my school when l was a kid.

    • @tecmath
      @tecmath  Před rokem +1

      Nor me.
      We were taught to mindlessly follow a formula.

  • @ramanarlv
    @ramanarlv Před rokem

    I love it !!, I love you , Everything is beautiful

  • @marcyking461
    @marcyking461 Před rokem +1

    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 Před 10 měsíci +1

      Thank you so much, I understand your explanation well than his.

    • @titusonaga-sb3uw
      @titusonaga-sb3uw Před 10 měsíci +1

      I love your teaching, u are the best teacher.

  • @helloworld11115
    @helloworld11115 Před 7 měsíci

    NICE

  • @RithwikVadul
    @RithwikVadul Před rokem

    I do like this already

  • @peterstrafer3329
    @peterstrafer3329 Před rokem +1

    Did it the way you originally showed!

  • @user-ys4py2hy7c
    @user-ys4py2hy7c Před rokem +1

    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😅

  • @plonjart
    @plonjart Před rokem +1

    the way i did it was by doing 3 x 6.1, 9 x 81, and 4.5 x 1.8 respectively

  • @Fret-knot
    @Fret-knot Před rokem +2

    Everything is beautiful

  • @sackman2467
    @sackman2467 Před rokem

    This guy is the legit oversimplified for mathematics

  • @crazebamm
    @crazebamm Před rokem +1

    "Is that how you did it" NO lmao im so dumb. I love your videos man. Keep it up!!

  • @Memorablechannel
    @Memorablechannel Před rokem

    Plz bring something on log ,antilog🙏🙏🙏🙏

  • @basilkhouli5670
    @basilkhouli5670 Před 9 měsíci

    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%

  • @athirap-sr7ut
    @athirap-sr7ut Před 10 měsíci

    👏🏻👏🏻

  • @Meliitak
    @Meliitak Před 4 měsíci

    No matter what the procetage is, I always divide the number on a 100 pieces then multiply with a given procentage

  • @jonathanrobinson73
    @jonathanrobinson73 Před rokem +1

    ok ...i love you 🤣

  • @mnageh-bo1mm
    @mnageh-bo1mm Před rokem +1

    wow, for the first time in my life i understand maths 😭😭😭😭

  • @WahrheitMachtFrei.
    @WahrheitMachtFrei. Před rokem +5

    I wish you'd taught me maths at school, I wouldn't be bad at it and scared of it.

  • @smoath
    @smoath Před rokem +1

    👍🏻

  • @rorigillmore141
    @rorigillmore141 Před rokem

    ay i accually got those 3 the same way he did. im genius

  • @321afyr
    @321afyr Před rokem

    where was this when I suffered in middle school

  • @honey-wn5vt
    @honey-wn5vt Před rokem

    what i do is to find 60% of 42 i put a decimal point so i do 4.2 x6= 25.2

  • @barryjackson405
    @barryjackson405 Před rokem

    25.2

  • @user-bo3mp8un6c
    @user-bo3mp8un6c Před rokem

    I love it. I love you. Everything is beautiful.

  • @Cube8810
    @Cube8810 Před rokem

    Or you can times 60times40 that is 240 6 times 2 equals 12 240 plus 12 252 dived by 100 25.2

  • @Lloyd1885
    @Lloyd1885 Před rokem +1

    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 Před 10 měsíci +1

      When you add the 50% and 10% calculations together you end up with 60% of 61 instead of 30% of 61

  • @In2oil2
    @In2oil2 Před rokem

    I did but a little differently.. I multiplied 6x 4= 24. and the .2x6= 12. so 24+1.2. 25.2

  • @DougieL
    @DougieL Před rokem

    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...)

  • @Dyanosis
    @Dyanosis Před rokem

    Another, relatively easy, way is this:
    42 * 60% = 42 / 10 * 6 = 4.2 * 6 = 25.2

  • @DragonUdo
    @DragonUdo Před 3 měsíci +1

    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

  • @AliG.G
    @AliG.G Před rokem

    90% of 860 I did it by cancelling 2x0s and 9x86 = 774

  • @markallen2984
    @markallen2984 Před rokem

    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.

  • @johnathanwilko2922
    @johnathanwilko2922 Před rokem +2

    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 Před rokem

      I've been trying to figure this out too?

    • @tecmath
      @tecmath  Před rokem +1

      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

  • @Chadmurdock6114
    @Chadmurdock6114 Před rokem

    18.7% 344% 8.1%

  • @Reachermordacai
    @Reachermordacai Před rokem +1

    I did number 2 like 50% and 10% x 4 :S

    • @alexnutcasio936
      @alexnutcasio936 Před rokem

      Too many steps, you can do it in your head in less than 5 seconds….

  • @softbrewed
    @softbrewed Před rokem

    the 5% is still so confusing to me for some reason

  • @Bozemanjustin
    @Bozemanjustin Před rokem +3

    For 90% I still found it easier to just take 10% and multiply by 9

    • @gb9276
      @gb9276 Před rokem +1

      For 90%, I find it easier to subtract 10% from 100%. God bless!

    • @tecmath
      @tecmath  Před rokem +1

      Thanks. Thank you for sharing.

    • @ricos1497
      @ricos1497 Před rokem

      You found 86 x 9 easier than 860 - 86? Funny how the brain works.

  • @charleslennonbaker
    @charleslennonbaker Před rokem +1

    H.S.!

  • @MrWarlech
    @MrWarlech Před rokem

    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

  • @dskywalker3397
    @dskywalker3397 Před rokem +2

    Always use BASE 10!

  • @tonyflamingos5428
    @tonyflamingos5428 Před 4 měsíci

    This made me very confused you should try to explain better in the next video

  • @nubiefromaustralia9196
    @nubiefromaustralia9196 Před rokem +1

    Are you british???

    • @logann001
      @logann001 Před rokem +1

      Sounds Australian

    • @suzanneedmonds1566
      @suzanneedmonds1566 Před rokem +1

      He is Australian.

    • @ghoulbuster1
      @ghoulbuster1 Před rokem +3

      He is martian

    • @tecmath
      @tecmath  Před rokem +1

      I'm from West New Zealand (aka Australia)

    • @suzanneedmonds1566
      @suzanneedmonds1566 Před rokem

      @@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.

  • @gnarkilleptic4871
    @gnarkilleptic4871 Před rokem

    I hate math so much

  • @jopflah416
    @jopflah416 Před rokem +69

    6 times 4.2 is quicker and easier.

    • @JG-tx7mt
      @JG-tx7mt Před rokem +7

      Do you always multiply the 1st two numbers no matter how high the number? Ex. 2473 would you multiply by 2.4?

    • @heardukey
      @heardukey Před rokem +7

      @@JG-tx7mt that’s a whole another number my guy, keep all the numbers

    • @Doktor47
      @Doktor47 Před rokem +2

      @@JG-tx7mt No.. assuming you're looking for lots of 10%, you'd multiply by 247.3

    • @jamesrichardson-king9359
      @jamesrichardson-king9359 Před rokem +2

      Jopflah No it isn’t quicker 🙄

    • @jamesrichardson-king9359
      @jamesrichardson-king9359 Před rokem +6

      It must really annoy you with all these twits trying to better you👍

  • @generalpurpose6517
    @generalpurpose6517 Před rokem

    Wow my math teachers all sucked

  • @chayo8926
    @chayo8926 Před rokem

    not applicable long method

  • @krunoslavregvar477
    @krunoslavregvar477 Před rokem

    25.2