Kids practice addition and subtraction with manipulatives in this silly shopping game.

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

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

Kids solve two- and three-digit addition problems by regrouping in order to help the Professor grow out his beard.

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