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学習ガイド > Prealgebra

Summary: Adding Integers

Key Concepts

  • Addition of Positive and Negative Integers
    5+35+3 5+(3)-5+\left(-3\right)
    Both positive, Sum positive Both negative, Sum negative
    When the signs are the same, the counters would be all the same color, so add them.
    5+3-5+3 5+(3)5+\left(-3\right)
    Different signs, More negatives Different signs, More positives
    Sum negative Sum positive
    When the signs are different, some counters would make neutral pairs; subtract to see how many are left.
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  • Adding Integers with Same Sign Using Color Counters
  • Adding Integers with Different Signs Using Counters
  • Ex1: Adding Integers
  • Ex2: Adding Integers

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