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.