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View Poll Results: Which way do you subtract?

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  • Left to right

    3 20.00%
  • Right to left

    9 60.00%
  • I have pi - e memorized, and I multiplied by 100.

    3 20.00%
Results 1 to 13 of 13
  1. #1
    riding once again jschen's Avatar
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    How do you do your subtraction?

    Okay, following up on a question I asked over a year ago...

    Just for amusement, let's try something. I am posting two numbers below. Try to subtract the second number from the first either in your head or on paper (no assistance from computer/calculator/abacus/counting beans/etc).

    314.159
    271.828

    Which way did you work? Left to right, or right to left?
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  2. #2
    riding once again jschen's Avatar
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    Aforementioned thread from over a year ago.
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  3. #3
    Chief Slacking Officer ms.gio's Avatar
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    Answer: 42.331

    Thanks jschen for making me doing simple substraction at 3:45 am. To be honest, that was a little hard for me to do at this hour...and I used to be an engineering student. Goodness, I need to get to bed.
    Quote Originally Posted by x136 View Post
    Giolander: There can be only one.
    Giodome: Several impostors enter, only the real one leaves?

  4. #4
    Feral Member Nicodemus's Avatar
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    me3h. i go for ride now
    Quote Originally Posted by KrisPistofferson View Post
    Did you just say "minarchist?" I'm going to start a 10-page vaginathon because only Libertarians can define Libertarianism. Also, you're mean.

  5. #5
    Senior Member bitingduck's Avatar
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    L to R in my head, R to L on paper
    Track - the other off-road
    http://www.lavelodrome.org

  6. #6
    Displaced Southerner polara426sh's Avatar
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    pie

  7. #7
    the actual el guapo atomship47's Avatar
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    i do it like all yahoos.....on my fingers and toes.
    Compatibility:

    Your exact opposite is the Televangelist.

    Other personalities you would probably get along with are the Capitalist Pig, the Smartass, and the Sociopath.

  8. #8
    '05 NUEser EJ123's Avatar
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    Porcupine

  9. #9
    Legs of Steel chrisvu05's Avatar
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    on a calculator

  10. #10
    Videre non videri
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    Actually, I don't really do it either way.

    314.159 becomes 300, from which I subtract 272, making 28. I then add 14 (300->314) to 28 and get 42.

    Next, I subtract 828 from 1000 to get 172 and add 159. That's 331.

    Answer is 42.331

  11. #11
    (((Fully Awake))) Serendipper's Avatar
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    I work right to left, adding remainders as I go.
    __________________________________________________________________________________________________

    無上甚深微妙法 .... 百千萬劫難遭遇..... 我今見聞得受持

  12. #12
    the actual el guapo atomship47's Avatar
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    Quote Originally Posted by EJ123
    Porcupine
    TREE!
    Compatibility:

    Your exact opposite is the Televangelist.

    Other personalities you would probably get along with are the Capitalist Pig, the Smartass, and the Sociopath.

  13. #13
    riding once again jschen's Avatar
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    Quote Originally Posted by CdCf
    Actually, I don't really do it either way.

    314.159 becomes 300, from which I subtract 272, making 28. I then add 14 (300->314) to 28 and get 42.

    Next, I subtract 828 from 1000 to get 172 and add 159. That's 331.

    Answer is 42.331
    I've heard of that method, but haven't gotten my mind around it except in simpler cases (in which case I do it all the time). Doesn't help that I basically never do mental subtraction nowadays.
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