Faster than a calculator | Arthur Benjamin | TEDxOxford

  • Published on Apr 8, 2013
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    Benjamin makes numbers dance. In his day job, he's a professor of mathematics at Harvey Mudd College; in his other day job, he's a "Mathemagician," taking the stage to perform high-speed mental calculations, memorisations and other astounding mathematic stunts. It's part of his drive to teach math and mental agility in interesting ways, following in the footsteps of such heroes as Martin Gardner.
    TEDxOxford is organised by University of Oxford students, aiming to bring together the young minds of tomorrow's world with the movers and shakers of today. TEDxOxford is kindly sponsored by Neptune Investment Management -
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Comments • 25 561

  • モッツアレラ
    モッツアレラ 2 hours ago


  • Petra Rueckl
    Petra Rueckl 11 hours ago

    Teacher:who gets this write can leave school.
    Athur Benjamin: hehe

  • ArtistsAnomalous
    ArtistsAnomalous 11 hours ago

    There's only one explanation. Arthur Benjamin must have....


  • Pestiferous
    Pestiferous 12 hours ago

    I'm taking him back with me from area 51 boys

  • Pestiferous
    Pestiferous 12 hours ago

    I think the real trick is here how he makes them look so foolish standing there and he's doing the work and asking the audience to applause them.

  • Charlie Balloonz
    Charlie Balloonz 13 hours ago

    I would like to ask him what 1+1 equals to....he would be confused

  • Hello Everyone
    Hello Everyone 14 hours ago

    How about *0÷0* ?

  • ZedBC
    ZedBC 15 hours ago

    *let me take this one step further*
    Thanos: *shocked pikachu face*

  • Son Kim
    Son Kim 15 hours ago

    What??? Unbelievable

  • Cabra
    Cabra 19 hours ago

    Chinese women on calculator still faster XD

  • Anmol Panwar
    Anmol Panwar 21 hour ago

    Arthur Benjamin - *Let me try to take this one step further.* Tell me your debit card type and *I will tell you your Debit card no. And its Pin*

  • Vikram Rajpurohit
    Vikram Rajpurohit 21 hour ago

    Multiplying by 576 (which sum of digit is 18 or 1+8=9) so sum of digits of answer will be always 9. This is a high school problem.
    By using vedic mathematics you will be vocal calculator. This is not surprise.

  • The Ghost
    The Ghost 22 hours ago

    But the real question is who's on first?

  • FaTKidS LovECakE

    Show off : )

  • Radicrash
    Radicrash Day ago

    He's just using this as an excuse to show off

  • greco37
    greco37 Day ago

    You can multiply up to two 8 digit numbers on your phone you just have to turn it sideways When you do the calculation

  • Unorthodox
    Unorthodox Day ago

    I can get the answer before him!

    Might be wrong though.

  • ᴏɴɪᴏɴ ᴋɴɪɢʜᴛ

    Calculator: Am I a joke to you?

  • BL Mathematricks


  • baba bucalon
    baba bucalon Day ago

    After Highschool and college years.

    RU-clip Algorithm: Hey, i knew you graduated so let me recommend this.

  • Varun Virat
    Varun Virat Day ago

    He is mad

  • Bibek Shrestha
    Bibek Shrestha Day ago

    Even if my brain can, I can’t.

  • Blaze Aditama
    Blaze Aditama Day ago

    I've been watching this video 5 times, and I'm still impressed by his talent..

  • Domenico The Mc
    Domenico The Mc 2 days ago

    I can do maths that quick

    2+2 is 4-1that’s 3

  • Joel Doxtator
    Joel Doxtator 2 days ago

    So basically, he breaks down the number into manageable chunks, stores those chunks in string variables in his mind and adds the string variables together. The man has programmed himself like a computer.

  • LakshmiSagar S
    LakshmiSagar S 2 days ago

    That requires some crazy ultra short memory

  • DerpyBart
    DerpyBart 2 days ago

    this man is an example of what they keep in area 51

  • Your not good xd
    Your not good xd 2 days ago +1

    Teacher: Why did you not bring the calculator i've asked you to bring?
    Arthur: I am the calculator

  • Drag0n K1ng101
    Drag0n K1ng101 3 days ago +1

    **me over here tryna figure out 2 + 2 with a calculator

  • John Doe
    John Doe 3 days ago

    speaker in his ear feeding him the right answers, easy, anyone can do it

  • vilas bhandekar
    vilas bhandekar 3 days ago

    Oh my god.

  • Usman Awan
    Usman Awan 3 days ago

    That's insane.. super brain man!

  • Boyd JP
    Boyd JP 3 days ago

    Arthur Benjamin:I am the math god!
    Yaashwin:Hold my calculator

  • Caleb Yoo
    Caleb Yoo 4 days ago

    he broke his chalk two times

  • Anonymous • 8 years ago

    Calculators= Mates we are shifting on Mars.

  • ハンニバル
    ハンニバル 5 days ago

    I haven’t see such a person!!!!!!

  • Maria Lourdes De Castro

    Omg!! :O

  • SoHo
    SoHo 6 days ago +1

    But...can he do Common Core Math??? lol

  • Luis Henrique Lira da Fonseca Fonseca

    Very interesting how many people on the comments are completely amazed and I see no one mentioning Soroban and Anzan. I thought he was using Anzan until he exposed his method in the end and it was quite obvious that the method is more cumbersome and slower than Anzan. Not to say that it is "bad" or doesn't work, but since he sells the method, it should be fair to compare with the competition.
    If anyone is amazed by this I suggest you to watch videos of 7-9 year old Japanese kids multiplying and dividing much, much bigger numbers. Then search for "Chinese Math Competition" and get your mind really blown away. That is Anzan.

  • Rana Cenkci
    Rana Cenkci 6 days ago

    After all of that all I wanna learn is the boy (who has blue tshirt) wears just socks??? And one of them is green

  • Romas Alonderis
    Romas Alonderis 6 days ago


  • Suii ツ
    Suii ツ 6 days ago

    Its cool to be able to do this, but its not really useful tbh

  • DrFruityLoops
    DrFruityLoops 7 days ago

    pfff whatever NERD

  • Nehemiah Brown Vlogz

    the guy on the far right looks like steve from stranger things

  • Joseph Ashak
    Joseph Ashak 7 days ago

    I think he has a cauculater in his head

  • DeclanDG
    DeclanDG 7 days ago


  • Pankaj Grover
    Pankaj Grover 7 days ago

    Check out Ayaan the Whiz Kid on RU-clip - 4 years old Maths genius from India.

  • Msskey Wit da hat
    Msskey Wit da hat 7 days ago +4

    We need this man for the Area 51 break in

  • WaVvyBoiiiSwisS
    WaVvyBoiiiSwisS 7 days ago

    this guy's a god

  • LuKeks
    LuKeks 8 days ago +1

    You know what is faster than a calculator ? My ejaculation on my girlfriend

  • Cats Neko
    Cats Neko 8 days ago +2

    How does his brain calculate that so fast ?!

  • rob little
    rob little 8 days ago

    How the f- ?

  • emilio arrambide
    emilio arrambide 8 days ago

    peculiar contraction but it gives me satisfaction

  • Avian Gamer
    Avian Gamer 8 days ago +1

    5:10 I can relate to that so much, whenever I try to calculate big numbers in my head I often forget to change the first digit and I get everything else right.

  • Elect Elect
    Elect Elect 8 days ago

    If u just explained the d 3 digit square. I wld have learnt something.

  • Elect Elect
    Elect Elect 8 days ago

    Arthur: Now let me show my workings.
    Student: I don't still understand.
    Athur: How about now?
    Student: I can't understand !

  • Feel with it
    Feel with it 8 days ago

    When you are in a grocery store and you have a very limited amount of money

  • Ridwanul Shawrup
    Ridwanul Shawrup 8 days ago

    human eye can only see 42069

  • Sensi Mufasa
    Sensi Mufasa 9 days ago

    that haircut is very oldschool

  • Kevin Hull
    Kevin Hull 10 days ago +1

    With the calendar trick, there is a way to calculate w/o the Gregorian calendar: I just base my calculations on the fact that Oct 4 was a Thursday in 1582, when the calendar was changed. (The next day, for the Gregorian was Friday October 15, 1582.)

  • Mr E.
    Mr E. 10 days ago +4

    He had a bluetooth in his ear.

  • Lizzy Liz
    Lizzy Liz 10 days ago +1

    I want a math teacher like that :)

  • Adam Mai
    Adam Mai 10 days ago +2

    I know some people with autism have the ability to know what day of the week and date is off the top of their heads. This skill may be rooted somewhere on the spectrum. Very impressive nonetheless and I’m insanely jealous of his talent

  • x Crane
    x Crane 11 days ago +2

    Benjamin calculate faster then calculator
    Calculator: Am i a joke to YOU?

  • Tyler WIllson
    Tyler WIllson 12 days ago +2

    I've seen this in real life... even more impressive

  • Lil K
    Lil K 12 days ago +1

    watching this after i got a 27% on my math finals

  • Fat Dinosaur
    Fat Dinosaur 12 days ago

    Calculator : Declars World War 3

  • MOI TV
    MOI TV 13 days ago

    he is faster than a calculate user but not calculate

  • Cargradulation Daily Post

    people can you calculate : 26354.736 ÷ 345.5
    im like : let's meet tomorrow to give you the answer

  • Money Singh
    Money Singh 13 days ago

    He know abacus

  • XP
    XP 13 days ago +8


  • Kriptônio S
    Kriptônio S 13 days ago

    Omg, don't break the criptograph

  • Zyshonne Williams
    Zyshonne Williams 14 days ago


  • LePage Channel
    LePage Channel 14 days ago

    Like Derren Brown. But for real.

  • yash negi
    yash negi 14 days ago +1

    This is unreal

  • Eric
    Eric 15 days ago

    Light, tomorrow, raft?

  • jamesblunt006
    jamesblunt006 15 days ago

    14:26 The clue how he does this is in the number of millions.

  • X Y
    X Y 15 days ago

    dude what the heck is this guy's brain

  • Zalán Vészi
    Zalán Vészi 15 days ago

    Calculator: Im joke to you?

  • Anthony123
    Anthony123 15 days ago +1

    This guy is a math god I failed level 1 algebra

  • DjGamer394
    DjGamer394 16 days ago

    What a nerddddd

  • Christós Anésti
    Christós Anésti 16 days ago

    he popped off

  • Oleg Nedranets
    Oleg Nedranets 16 days ago +1

    That's some next level flexing

  • Mathieu Hennes
    Mathieu Hennes 16 days ago +4

    Me at 9 pm: I'm going to sleep early
    Me at 3 am:

  • Hyro Berto
    Hyro Berto 16 days ago


  • The Merciful
    The Merciful 16 days ago +1


  • Hael Park
    Hael Park 17 days ago

    Arthur Benjamin: exists
    Calculator: am I a joke to you??

  • Top Piority
    Top Piority 17 days ago +3

    How many A's in math do you want
    This guy: YES

  • Victendo
    Victendo 17 days ago +12

    *breaks chalk*
    Let me try to take this one step further
    *Destroy the board*

  • Rick Danner
    Rick Danner 18 days ago +1

    but can he cook?

  • Jimmya Jimmya
    Jimmya Jimmya 18 days ago wonderful

  • Abhinav Saxena
    Abhinav Saxena 18 days ago

    How you have calculated those calculations I didn't understand

  • YANKEEbomber 152
    YANKEEbomber 152 19 days ago

    It’s like all of the Asian population in the world intelligence are inside of Arthur

  • AwsumSauce
    AwsumSauce 19 days ago +1

    Is anyone talking about the poor chalk?
    Rip chalk

  • ilPertill
    ilPertill 19 days ago

    when he had them list the 6 digits and he guessed the 7th all the digits together made 866 which when scambeled is 686 which was so close to the 676 on the board. almost an accidental magic trick

  • Brian M
    Brian M 20 days ago +1

    Reminds me of Bill Gates

  • Phil Liberatore
    Phil Liberatore 21 day ago

    Impressive, Arthur. I suggest you wear your hair above your ears. I'm not saying you are wearing an earpiece, but that would remove all doubt.

  • Mango Thief
    Mango Thief 21 day ago +5

    Arthur: Can anyone give us a two digit number?
    Todd Howard: 76!

  • Jesus Christ
    Jesus Christ 21 day ago

    What a nerd

  • MD Heartright
    MD Heartright 21 day ago +1

    He has an earpiece....duh!

    • MD Heartright
      MD Heartright 15 days ago

      @Alf Bluehe is being told through an earpiece what the answers are, Daabor.

    • Alf Blue
      Alf Blue 15 days ago

      It a microphone Einstein