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Thread: Subtracting in base 6

  1. #1
    Newbie scott_237's Avatar
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    Subtracting in base 6

    Question) Evaluate: 522(base 6) - 244 (base 6)

    answer = 234 , one mark for both method and answer, no marks given for converting to decimal and back.
    Last edited by ThePerfectHacker; Aug 5th 2008 at 02:11 PM. Reason: woops! its 522 not 566
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  2. #2
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    Hello, scott_237!

    If you copied the problem accurately,
    . . there is no way they can get their answer!


    Evaluate: .$\displaystyle 566_6 - 244_6$

    Answer: .$\displaystyle 234_6$ .??
    There is no "borrowing" required.
    . . The answer comes out to: $\displaystyle 322_6$

    . . $\displaystyle \begin{array}{cccc} & 5 & 6 & 6 \\ - & 2 & 4 & 4 \\ \hline & 3 & 2 & 2 \end{array}$

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    Quote Originally Posted by scott_237 View Post
    Question) Evaluate: 522(base 6) - 244 (base 6)
    answer = 234
    Scott, Did you try adding $\displaystyle 234_6 + 244_6$ to see how it might work?
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  4. #4
    Newbie scott_237's Avatar
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    yea thanks, i see how it works when i convert it to decimal then back, i.e. base 6 = ...36,6,1 as opposed to decimal = 1000,100,10,1 but the question requires it to be done with a certain method, you don't get marks for converting to decimal then doing the subtraction then converting to base 6 again.

    Do any of you know a method like this?
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