Key Concepts

This is a lesson from the tutorial, Mathematics 103: Integers and we encourage you to log in or register before you continue, so that you can track your progress.

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Key Concepts

  • Addition of Positive and Negative Integers
    both positive, sum positiveboth negative, sum negative
    When the signs are the same, the counters would be all the same color, so add them.
    different signs, more negativesdifferent signs, more positives
    Sum negativesum positive
    When the signs are different, some counters would make neutral pairs; subtract to see how many are left.


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