Math Test

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  • Hohn

    Master
    Rating - 100%
    1   0   0
    Jul 5, 2012
    4,445
    63
    USA
    Order of operations followed, it is 9. Therefore the correct answer is 9.

    Parenthesis (2+1) = 3

    Multiplication / Division is assessed left to right.

    New equation: 6 / 2 * 3

    Left to right: 6 / 2 = 3

    New equation: 3 * 3 = 9

    Where's my cookie?

    Check your browser's cache-- most cookies are stored there.

    But at least you got it right! IT IS NINE.
     

    Ted

    Shooter
    Rating - 0%
    0   0   0
    Mar 19, 2012
    5,081
    36
    I gotta know, can a resident of Kentucky find the answer by counting fingers/toes/teeth?

    If a couple married in Kentucky, move to Buffalo, and are divorced three years later.......are they still brother and sister?
     

    jtdet01

    Plinker
    Rating - 100%
    1   0   0
    Aug 16, 2012
    120
    18
    The correct answer is 1.
    First, calculate what's inside parenthesis:
    6 ÷ 2 (3) =
    Second, calculate the multiplication (implied):
    6 ÷ 6 = 1

    Why? Because

    6 ÷ 2 (2 + 1) =

    is either
    (A):

    6
    ------------ = 1
    2 (2 + 1)

    OR
    (B):

    6
    - X (2 + 1) = 9
    2

    A is correct. B is ridiculous. This is one reason why kids are failing in math.
     

    ATM

    will argue for sammiches.
    Site Supporter
    Rating - 100%
    30   0   0
    Jul 29, 2008
    21,019
    83
    Crawfordsville
    The correct answer is 1.

    Wrong.

    First, calculate what's inside parenthesis:
    6 ÷ 2 (3) =
    Correct.

    Second, calculate the multiplication (implied):
    6 ÷ 6 = 1
    Wrong.

    Why? Because...
    Because you did not perform all multiplications and divisions, working from left to right.

    You chose to perform the right multiplication before the left division for some reason. :dunno:

    9 may seem ridiculous, but it is correct.
     

    CTS

    Expert
    Rating - 100%
    4   0   0
    Jun 24, 2012
    1,397
    48
    Fort Wayne
    I hate these. The answer is that there is no single correct answer and no one serious about what they're doing will ever write an expression like that.

    There is a current debate about where in the order of operations multiplication by proximity will fall, some mathematicians have one opinion some have another. They're not in any particular hurry to settle on the issue (it's been debated for about the last 70 years or so), because again...no one in their right mind would ever write an expression that looked like that.

    See the bottom of this page here:

    http://www.purplemath.com/modules/orderops2.htm

    and if that's not enough

    http://www.math.vanderbilt.edu/~schectex/commerrs/#Operations
     
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