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

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

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

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

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

Children hone their knowledge of addition and missing addends 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.

Dive for treasure and missing factors in this online game featuring addition equations.

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

Which equation looks right? Review fact families and addition to 10 in this educational math game.

Kids practice adding small numbers in this silly addition game.

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

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

Children practice adding two-digit and one-digit numbers to dig up fossils in this math game.

Add one and find the sum! In this game, children practice number and pattern recognition skills.

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

Kids try to match the equations that equal the same number in this online math game!

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

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

Hone first grade addition strategies with this underwater math adventure!

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

Math learners hone their multi-digit addition skills in this interactive game show!

Learners hone their two-digit by one-digit addition skills in this underwater race to sunken treasure!

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

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

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

Children will love racing to the finish line while boosting their addition and mental math skills.

Children hone their multi-digit addition skills in this fun race to the finish line!

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

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