Fast Math Trick

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Math, Mathematics, Calculation

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Become Harry Potter of Mathematics. In 5 mins reprogram your mind to calculate faster than the Calculator itself. Impress others with your super-fast mental mathematics.

  1. By: glad2teach
  2. Categories Other
  3. Views 138,296
  4. Added :29-Aug-07
  5. Related Link: Learn More Such Fast Mental Math Tricks Here
Comments on Fast Math Trick
Other comments on this video
  • Indian people...

    are the best at teaching math and economics. Many of my professors are Indian. They can teach pretty well, but sometimes they are hard to understand....lol

    By ktastic 1188681698
    • nice

      that's a cool trick...thanks

      By ag7k 1192979642
    • Sometimes people are hard to understand

      This guy does a great job of speaking slowly and clearly where you can understand him. Great trick, keep it up.

      By PatrickJordan 1192745241
  • ur great

    man that was great if a 1times 7std. failure and 1 time 8 std failure and 1 time 12 std failure can get it right then everybody can, i wish u had been my maths tutor in my school and collage days.

    By rajarshibanerjee 1188884307
  • 5 stars

    thank you.

    By starcc 1188865823
  • shut up

    tiz wan is gud ok

    By vince_vk023 1188828690
  • You have

    made my math life easier and I thank you

    By RobMD 1188714825
  • theres a quiker way

    (104 times 100) plus (104 times 4) =10400 plus 416 = 10816

    By motheman 1188497359
    • Title

      (104 times 100) = 10400
      (104 times 4) =
      (100 times 4) = 400
      (4 times 4) = 16

      Similar concept as the video. Divide and conquer. Your approach applies to more general cases though. It will work with any multiplication.

      By rgoheqmspoq2 1192324946
  • many thanks...

    fantastic teacher...

    By Joseph Nicholas 1188485524
  • great !

    i want to see more ..

    By holly ma 1188481798
  • very impressive...

    not to mention, very educational... it beats listening to my math teacher...just keep posting additional instructional videos... you have one attentive student in here...

    By nikkomahor 1188392306
  • Very interesting!


    Keep them coming! :)

    Just curious, how do you find out about these tricks?

    By Muuip 1188385760
    • reason

      come on guys! have you ever heard of binomials?
      (a b)^2 = a^2 2*a*b b^2
      always;)
      as simple as that

      By rezadj 1188391312
    • little correction

      is ( a + b )^2 = (a)^2 + 2ab + (b)^2
      therefore (104)^2 = (100 + 4) ^2
      = (100)^2 + 2(100)(4) + (4)^2
      = 10000 + 800 +16
      = 10816

      By evan520_520 1188401274
    • (a+b)² = (a)² + 2ab + (b²) is better...

      Your formula is better,

      the one on the video is great for mental calculations but only for numbers around 100.

      Yours is good for all numbers, althought for numbers around 100 the formula from the video might be easier for a few people to work it out mentally.

      Thanks for the formula, keep them coming!

      Salut!! :)

      By Muuip 1188401768
    • man you guys are all F**king smart

      my dumbass failed algebra

      By Doyouwantaspoon 1188445810
    • I am sure you got your own strong point


      I S**k in other matters, just focus on your own talents and make something great out of it.

      By the way, by failing Algebra you actually learned something about math, keep learning. :)

      By Muuip 1188482072
  • thanks

    it was nice

    By oxymore_colossus 1258494967
  • simple but good method

    this method is simple and good. What software you used to record this video?

    By venkat65 1237009751
  • Wow

    You are a REALLY good teacher pal. I'm learning a great level of math from you. I would defintely love to watch more of your videos. :) Also, I'm 18 and am so, not meant to be interested in maths. Lol.

    By james_parker 1207775307
  • Using standard mathematics

    a= 100, b=0, c=4 a^2 c(2a c)
    (a b c)^2 = (a b c)(a b c)
    a^2 2ab 2ac b^2 2bc c^2 (general cross-wise method) b=0 so
    b(b 2a 2c) c(2a c) c^2=a^2 c(2a c),
    test it out
    4(200 4) 10000 = 816 10000 = 10816

    By Handofnod 1199220837
  • nice work..

    keep it up

    By The Boxer 1196077915
  • 5*s

    nice bro 5*s
    i think ur Indian right

    By tct 1189101622
  • aneshtaen

    i need ore lessen pls

    By aneshtaen 1188994538
  • really great

    5 stars

    By Ninifilm 1188992972
  • really great

    5 stars

    By Ninifilm 1188992965
  • smart

    real smart,thanks for posting good videos here..wish there's more like you in my university..but most employed are very bad in english

    By rugby1029 1188992819
  • indians

    are great at mental arithmatic

    they don't have calculators yet.... well.. only the very rich indians (rich compared to the average indian income)

    By rtnBounder 1188936099
  • Sorry could not resist...

    Thank you please come again..

    By Freefinger 1188528391
  • hey man your cool

    5 stars

    By Dorin mortu 1188505092
  • dude

    really good it helped me greatly thx..

    By YogUrT_CoMPleX 1188491702
  • You're the man!

    Dude, you rock. This is going to be a huge help to me this year while I'm in Algebra 2!

    Keep them coming!

    By enkrypt0r 1188491019
  • damn.

    damn that S**ks only for even numbers :(

    By Kickass_Flip 1188472840
  • awesome

    u r my hero i love your math tricks

    By Mordemor 1188425764
  • wow...

    man, this is great stuff!

    By kheme 1188373406
  • hi...

    nice stuff....

    By Climaxed_Cargo 1188369109
  • my bad.

    i know how to work it now.

    By kennlim 1210844827
  • my bad.

    i know how to work it now.

    By kennlim 1210844706
  • DOES NOT WORK

    i am so disappointed because it only works for 104^2!!! try others like 214^2 or 312^2 it doesnt work!!

    By kennlim 1210843903
  • Nice but

    ur voice is anoying

    By manomane 1188618209
    • Great voice track

      I like your voice, It has an Omar Sharif quality. very clear.

      By coping 1188627706
  • Can understand

    I dont mean to be at all racist but i cant understand this guy. i only caught the first bit but only because it was also in text

    By Shadow Sillouette 1188523726
  • Well....

    even though you don't need calculators if you were trying to mentally multiply,you will need to have it for something like trigonomatry.I'm gonna keep my calculator for now.Lol

    By excaliber 1188487216
  • It's a good thing...

    that I made my fingers faster than my brain... My calculator and I have a long long relationship. :P

    By Krazeel 1188471849
  • Awesome

    I want more, dude.
    thank u so much!

    By zodiaz 1188471769
  • Cool stuff

    Don't mind the 'tards, they are self entertaining

    By upnorth 1188394183
  • This would have been very useful

    This would have been useful 30 years ago when I was in school. Where the hell were you?!!!!!!

    By Eddie H 1188465229
  • there is faster

    take a calculator

    By ______ 1188416610
  • smart

    How do you know he is indian.what you are sleeping with him...ha.ha.

    By dempet 1188381511
51 Comments