Addition experts, come on down! Practice quick-thinking two-digit addition in this educational game that tests off-the-cuff adding skills.

Only your kid's addition skills can help Secret Agent Floyd defeat the evil El Gato.

Children dig up dinosaur fossils by adding 10 to multiples of 100 in this prehistoric game.

Your kid will add the right number of eggs to the nest to practice addition facts.

Your kid represents addition facts with objects by counting Roly's hats.

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