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Adding fractions

Discussion in 'Mathematics' started by misss1608, Nov 27, 2016.

  1. misss1608

    misss1608 New commenter

    How would you expect students to solve this problem?


    I have found this on a blog but can't access the notes on the solution.
  2. adamcreen

    adamcreen Occasional commenter

    It's a puzzle not a maths problem. Look at the denominators. Any of them common multiples of a number? Yes. So just add /13 and /39. then add /19 and /38. then add /22 and /33.
    Each of those gives you an easy fraction, then you add the three of those together.
    In my head (yes, it's a mental maths problem) I worked out the answer is 1.
    Cervinia likes this.

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