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

Kids practice matching each addition equation to its missing factor in this interactive math game.

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

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

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

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

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

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

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

First graders match the cards that equal the same value in this mental math matching game.