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Math Help - Homework Help

  1. #1
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    Homework Help

    My fourth grader got this problem: Using all four of the numbers 8, 4, 2, 1 in this order make equations that equal 0 through 10. We may use the operations +, -, x and division in any order and any number of times. We have managed to find equations that equal 0 through 7, but we are having problems finding the last 3 equations that equal 8, 9 and 10. Help??
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  2. #2
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    8 = 8 x (4/2-1)
    9 = 8 + 4 - 2 - 1
    10 = (8 + 4 - 2) x 1
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  3. #3
    MHF Contributor
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    If brackets not allowed:
    8: 8/2 + 4/1

    10: 8/1 + 4 - 2
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