Build up second graders’ math knowledge with a diving game about three-digit addition.

Kids practice mentally adding sums up to 30 in this fast-paced addition race.

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

What’s the sum? Add 10 to that number in a three-digit addition game for second graders.

Kids practice two-digit addition to 100 in this action-packed number line game.

Match each addition fact to its answer in this online game!

To help Roly move through obstacles, kids learn a regrouping strategy to make addition within 20 easily!

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