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

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

Kids sharpen mental addition skills with this silly construction math game.

Get ready to add 10 more! Analyze expressions like "110 + 10" and calculate three-digit sums.

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