Model Addition

Lina and Nina are playing a board game. To keep track of points, they are using yellow counters to represent positive points, or points gained, and red counters to represent negative points, or points lost.

Nina lost 3 points in the first round. Then she lost 5 points in the second round. Use red counters to model Nina’s total score.

Read the explanation below to learn more about modeling addition of integers using counters.

Model Addition