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Math Help - Solve this problem please

  1. #1
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    Solve this problem please

    -282 - (+ 1017) = ?

    A. 1299

    B. -1299

    C. -735

    D. 735
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  2. #2
    MHF Contributor
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    Quote Originally Posted by Amanda
    -282 - (+ 1017) = ?

    A. 1299

    B. -1299

    C. -735

    D. 735
    -282 -(+1017) = ?
    So you want to subtract +1017 from -282.

    If I recall it right, the rule is, when you subtract, you change the sign of this thing you are subtracting, then you add the changed-sign thing to the amount you are subtracting from.
    (I bet the rule is not worded like that.)

    So, you are subtracting +1017. Then, change its sign, from originally positive to negative now.----->>> -1017.

    Then add that -1017 to -282.
    I bet you know how to add two negative numbers.

    If you got -1299 total, then I won the bet.
    Last edited by ticbol; December 14th 2005 at 12:13 AM.
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  3. #3
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    Thank you ticbol.
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  4. #4
    Junior Member
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    -282 - (+ 1017) = ?
    When there are two signs in front of the same number:
    If the signs are the same, replace with +
    If the signs are different, replace with -
    so -282-1017

    For adding/subtracting, when the signs are the same, add the #s and keep the sign the same.

    When the signs are different, subtract and keep the sign of the larger number, so -15+8 = -7 because 15 is larger than 8
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