## Key Concepts

**Addition of Positive and Negative Integers**\(5+3\) \(-5+\left(-3\right)\) 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. \(-5+3\) \(5+\left(-3\right)\) 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.