Subtraction of Two Signed Numbers

  1. Rewrite Subtraction as Addition

    1. Keep the first number (the minuend) the same

    2. Change Subtraction to Addition

    3. Flip the sign of the second number (the subtrahend)

  2. Add the Integers

    1. If the signs are the same, then ignore the signs and add the numbers

    2. If the signs are different, then ignore the signs and calculate
    3. "Larger" - "Smaller"

    4. The Result will take the sign of the "Larger"

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Copyright 2022, Ronald H. Moore