All aboard! Kids solve addition problems on a number line using 1, 10, and 100 unit manipulatives.

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

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

Kids add to different target numbers, and must be quick; the balls are dropping fast!

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

Help second graders learn about addition facts to 20 in this online matching activity.

Reinforce your child's three-digit addition skills with this ski-themed learning adventure!

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

Help Roly get to the party on the other side of the river by solving addition word problems!

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

Give learners plenty of practice solving addition word problems with this math game!