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

Find the sum of 12 plus 8 and other combinations that make 20 in this online diving adventure.

Compose numbers to make 20 and build first grade addition skills in each round of this online game.

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

Children will love racing to the finish line while boosting their addition and mental math skills.

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

Kids hone their single-digit addition skills as they match equations with their missing factors.

Children practice adding two-digit and one-digit numbers to dig up fossils in this math game.

How do you make 10? Dive into a math adventure and discover simple equations that add up to 10.

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.

Which equation looks right? Review fact families and addition to 10 in this educational math game.