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

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

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

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.

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

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

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.

Hone first grade addition strategies with this underwater math adventure!

Practice essential first grade addition skills in this river-themed math game!

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

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

First graders gain confidence with addition and decomposing numbers in this fun water rafting game!

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

First graders hone their addition skills of adding one more with this water rafting math adventure!

In this water-themed race, first graders use math and logic to fill in each addition equation.

In this math game, students practice finding sums and performing addition with 5.

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

Kids practice recognizing addition patterns as they match equations to their correct answers.

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

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

Fill in these addition facts! This game challenges kids to match missing addends to each equation.

Children use their addition knowledge to complete equations in a race to reach the sunken treasure.

Which number is missing? Click on the number that fits each addition expression and win the race.