Think about how numbers are related in this interactive game about addition fact families.

Fill in these addition facts! This game challenges kids to match missing addends to each equation.

In this water-themed race, first graders use math and logic to fill in each addition equation.

Children hone their knowledge of addition and missing addends in a race to reach the sunken treasure.

In this math game, students practice finding sums and performing addition with 5.

As students practice adding one-digit numbers, they will move their character to the finish line in Ski Racer: Addition to 10.

Kids click on bubbles that add up to 10 to try to keep the bubbles from overflowing.

Kids must move fast to find addition pairs that total a target sum within 20.