Kids practice adding and taking away 10 in this silly game show.

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

Kids mix up a potion to help Professor Beardo grow out his beard, and practice place value, in this multi-digit addition game.

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