Children hone their knowledge of addition and missing addends in a race to reach the sunken treasure.

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

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

Players hone their two-digit addition skills as they match equations with their missing addends!

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

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

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

Which equation makes 10? Help young mathematicians figure it out in this treasure diving math game.

Children must choose the correct addition expressions as they race to the sunken treasure chest.

Kids practice matching each addition equation to its missing factor in this interactive math game.

Children practice addition within 10 in this water rafting adventure!

Kids hone their single-digit addition skills as they match equations with their missing factors.

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

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

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

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

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

Take a deep dive into the addition strategy of adding one more with this underwater math adventure!

How do you make 10? Dive into a math adventure and discover simple equations that add up to 10.

As students practice adding one-digit numbers, they will move their character to the finish line in Ski Racer: Addition to 10.

To help Roly move through obstacles, kids learn a regrouping strategy to make addition within 20 easily!

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

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

Play this snow-themed game, in which students practice using patterns to add within 10.

Hone first grade addition strategies with this underwater math adventure!

Kids practice concrete counting and simple addition at the pizza parlor.

Practice addition to 100 using multiples of 10! This game highlights two-digit addition math.

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

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

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