Children use their addition knowledge to complete equations in a race to reach the sunken treasure.

Children complete a race by choosing the correct addition expressions for the given 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.

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

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

Dive for treasure and missing factors in this online game featuring addition equations.

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

Which number is missing? Click on the number that fits each addition expression and win the race.

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