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

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

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

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

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

Add 100 to three-digit numbers and find the matching sums in this exciting Dino Fishing game.

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

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

Find the sum of 12 plus 8 and other combinations that make 20 in this online diving adventure.

Are you ready to add 10 to numbers over 100? Reinforce students’ learning in this ski-themed game.

Ask your child to practice adding up to 10 and breaking down math equations in this math race.

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

Children use their mental math skills to determine which equations add up to 20 in this math game.

Children flex their mental math muscles as they try to quickly find the equations that add up to 10.

In this energizing math game, think about how different numbers can add up to 20.

Help young learners identify the correct fact family equations in this exciting addition game.

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

First graders match the cards that equal the same value in this mental math matching game.

Kids help Elliott prepare treasures for her museum by answering word problems by using a tape diagram.

Think about how numbers are related in this interactive game about addition fact families.

Compose numbers to make 20 and build first grade addition skills in each round of this online game.