• mohit


  • memyselfi

    20! PEMDAS!

    • kris

      I’ve always called it BEDMAS. Same thing, though.

      • asdf

        I remember PEMDAS or Please Excuse My Dear Aunt Sally

        • Hannah

          PEDMAS is the french version of BEDMAS

    • Eragon1216

      Pretty sure your correct

  • alexi

    it is 320

    • sophie simmons


    • Anonymous


  • purple


  • BobShizzler

    20…. Why would I need to Google

  • Pari


  • happyfase


  • Rz2750*



    • Mark

      If one follows PEMDAS wouldn’t the process be the same as:

      (4 x 4) + (4 x 4) – (4 x 4) + 4
      16 + 16 – 16 + 4 = 20 :-)

  • someone like you

    so easy it took me three seconds to look at the problem and 4 seconds to solve and 15 seconds to show my work the answer is 20.
    problem: 4×4+4×4+4-4×4
    here is where pemdas helps u figure and u have to pay close attention the last 4×4 has a – sign in front of it so that is -16

    • someone unlike you

      should have spent a little extra time showing your work there bud. because with what you have shown, 36-(-16), the answer would not be 20, but 52 because that “reads” 36 minus a minus 16. surely what you meant to show was 36+(-16) or simply, 36-16 which btw has nothing to do with pemdas. your pemdas was just solving the multiplication before the addition.

  • hello


  • bigperson65


    • mathematician

      nope it is not 320 but is 20

  • T_T

    its 20 really simple; how can 73% of the people who answered this equation fail

  • sophie simmons

    it is 320

    • Geek

      No, follow Pemdas!

  • ET

    It’s 20, duh!

  • tyler


  • tyler

    order of operations, duh

  • Guest

    26 if done with orders of operations

  • jeremy so


  • Pan the Man

    20 Do multiplication first so it is now 16+16+4-16=? well two 16′s will cancel out so now we have 16+4=? so ?=20 20 is the only solution there is no square root or imaginary numbers. It is just 20

  • chris

    It doesn’t say that 73% got it wrong but that they ‘failed to answer it’. That explains it.

  • mathed

    think of it algebraically it is 16x+4 haha

  • d0601311 .


  • power!

    The answer is 320

  • Necro


    x = -1/4


  • asif

    answer is 360

  • asif


  • evelyn


  • Mathmatician

    IT IS 20!!!

  • Mathmatician

    I didn’t use google, I used brain power!!!!!!!(calculator app) with brain power!
    seriously I used my brain

  • Mathmatician


  • aravind goud


  • Asi Cruz



    20! 20! 20! 20! 20! 20!

  • Billy RickFish


  • math nerd ;)


  • madison

    20 is the answer

  • bob

    20 If you use CACA.

  • candycute423


  • Asi Cruz


  • Aya


  • Nutiu

    x= -1/4

  • Mackdaddy

    645,761,290 – 645,761,270 = 20 blowjobs. ;)

  • brian


  • yemisi


  • Carlo Minerva


    grouping then turns into this>>>(4)(4+4)(4+4-4)(4)




    • Carlo Minerva

      guys correct me if im wrong.

  • Jacoustix

    16x+4 or 4(1+4x) or maybe even 8[(1/2)x+2], but even stranger…… NUMBERS DONT HAVE MEANING

  • sarah


  • luara


  • luara

    20 I counted incorrectly

  • I deed it


  • angela


  • angela

    wait no calculator check proves it to be 20

  • Edupark

    It is 20 if it follows BODMAS Rule.
    B = Bracket
    O = Of
    D = Division
    M = Multiply
    A = Add
    S = Subtract

  • rationality&reason

    The real problem here is with the question, and I submit as evidence that, apparently, “73% of people failed to answer this”. This issue touches on one of my favourite rants, so… brace thyself:

    To solve this problem, we are required to know one of the most useless pieces of knowledge ever developed by human kind: a protocol for eliminating ambiguity from a statement where, if the author of the statement was not a sociopath, there would have never been any ambiguity in the first place. That’s right, we need to know the “order of operations” to be able to see which tasks need to be done before others. Why would anyone in their right mind create such a statement, when all that is required is the appropriate application of a single tool to clarify that actual intent. The tool is brackets, my friend, and if you care about the person who reads/parses/uses that which you create, please use them.

    Let’s do another test: find out how many people can answer this question:

    ? = (4 x 4) + (4 x 4) + 4 – (4 x 4)

    Then, let’s use the data to infer if the problem is with the math skills of the population, or with the communication skills of the question’s author.

    I have programmed software for most of my life, and in this domain the “order of operations” logic can become hugely more complicated than that of simple mathematical operations. Those who rely on the stated “order of operations” logic for complex (or even simple) statements create confusion, undermine maintainability, increase costs and fragility. They may even increase danger: the airplanes you fly on have a lot of software between the pilot’s hand and the control surfaces.

    So, let’s stop teaching people useless disambiguation protocols, and instead teach them how to communicate clearly.

  • penisdickvaginafucker

    Obviously it is 20. I don’t believe that 73% got this wrong. Maybe only 20%.

  • Pythagoras

    It’s pi/2, right?

  • Madison


  • loljk


  • Slane17

    its 20

  • Evan Snyman

    I much prefer de Jager’s 3-step method to any of the BODMAS variants – brackets, terms, work from left to right… It actually empasises a mathematically important concept – terms – rather than just being a gimmicky algorithm.

  • Mayz Edwardson

    That is so simple. As soon as I looked at it I knew the answer. Four multiplied by four is sixteen, so you’d have sixteen plus sixteen plus four subtract sixteen. Sixteen plus four equals twenty, so you’d have sixteen plus twenty subtract sixteen. Twenty subtract sixteen equals four, so you’d have sixteen plus four. SIxteen plus four equals twenty, so the answer is twenty. Somewhat complicated to explain but easy to figure out in your head.
    Steps: 4 x 4 + 4 x 4 + 4 – 4 x 4
    16 + 16 + 4 – 16
    16 + 20 – 16
    16 + 4

    • coolguy

      ur that genus, huh

    • coolguy

      Try 4×4+4/4*4+4-(4a/3)=3000
      What is a?

      • Mayz Edwardson

        Really? Give me something challenging.)
        a = -2232

    • anonymouse

      Try a right triangle with a hypotinuse of 5. What are the angles.

      • Mayz Edwardson

        Well the hypotenuse is 5, by the pythagorean theorem (a^2+ b^2 = c^2) other two legs are 4 and 3. The angle between 4 and 5 we will call angle 1, and the angle between 3 and 5 we will call angle 2. The third angle is of course 90 degrees.
        If we want to find angle 1 (formed by 4 and 5) we place pheta (Ɵ) in that angle. We do this so we can find the oppisite and adjacent sides. Side 4 is adjacent because it helps form the angle. Side 3 is oppisite because it doesn’t touch the angle. Side 5 is important too, but we don’t need pheta to find out what it is, because side 5 is the hypontenuse (it doesn’t form the right angle).

        Now you can find Sine, Cosine, or Tangent. It doesn’t matter which because you will get the same answer any way. For angle 1 I chose to find the Sine. To find Sine you divide the oppisite side by the hypontenuse. To find Cosine you divide the adjacent side by the hypontenuse. To find Tangent divide the oppisite by the adjacent side. This is often remembered by SohCahToa or:




        The sine of pheta (while on angle 1) is 3/5, as shown below. To solve for pheta (the measurement of the angle) You simply reverse the sine. This is harder to explain and easier to show so just look below. Then you have your measurement for angle 1. To solve for angle 2, just do the exact same process, but with pheta on angle 2.

        Angle 1: Sin Ɵ=(3/5)
        So, Ɵ= Sin-1(3/5)

        Just plug this into your calculator…

        Angle 2: TanƟ = (4/3)
        So, Ɵ= Tan-1(4/3)

        Angle 1 = 36.86989765 degrees

        Angle 2 = 53.13010235 degrees

        Angle 3 = 90 degrees

        All added together equals 180 degrees

        Also, angle 1 and 2 are complimentary so they add up to 90 degrees.

        And you thought both angles were 45 degrees. :)

        • Mayz Edwardson

          Here is a URL for a good picture of the right triangle I used. data:image/jpeg;base64,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

          It’s longer than I thought it was. :) hahaha lol

        • Smart(butnotreally)Person

          You have no idea how much this helped me! Thanks so much!!!

  • Tha slim shady

    its 1,948,765,230

  • JHuenefeldt

    I did the math and got 20. Then I typed it into Google, and it gave me 20!

  • dominic

    i got 20 hurray for me

  • SomeGenius

    “this” is the answer, its a trick question it asks you to answer “this” if you’re a mathaholic

  • Steelio

    That or for teachers Please Excuse My Dumb Algebra Students nut it’s 20
    My bro got 320

  • bob

    itz 400 nitwits!!!!

  • ho

    people who think it is 320 are wrong.
    it is 20 remember BEDMAS

  • bob


  • The Genius of Math


  • Derp


  • mathematician

    i think it is known as BODMAS
    ans 20

  • Somebody I Used To Know


  • gb88

    The answer is 20! ( I did it in my head, while falling asleep). They probably tested 2nd graders. That’s why 73% of people failed to answer this very feasible question.

  • gb88

    B.T.W, PEMDAS has certain flaws in rhe part of multiplication/division.

  • gb88

    Don’t confuse 20! for 20×19×18×17……..×4×3×2×1 ( Factorials)

  • Mustyouknow?

    20 Simple math, go back to grade school!

  • pedram


  • anonymous

    it’s 20!!!! no need to google

  • math teacher

    is 20…the first 4×4 reduce the last -4×4 and it remains 4×4+4. multiplication is first , so 16+4=20

  • Smartalex

    He said failed to answer because 73% are not Mathaholics and don’t care about the problem and by the way the answer is 20 not 320 use basic math rules people

  • Tyler Toole

    4×4+4×4+4-4×4 = x

    Step One: Honor Pemdas
    (4*4) + (4*4) + (4) – (4*4) = x

    Step Two: Organize Processes As Desired
    (4*4) + (4*4) – (4*4) + (4) = x

    Step Three: Simplify Tasks / Don’t do any work you don’t have to.
    (4*4) + (4) = x

    Step Four: Loose Unnecessary Emphasis On Assumed Principals
    4*4+4 = x

    Solve: 20 = x

    73% of people are offended to apathy by the sloppy presentation of your “problem”.
    >No googling.