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.

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.

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.

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.

Hone first grade addition strategies with this underwater math adventure!

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.

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

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

Practice two-digit addition and adding multiples of 10 in this Dino Fishing math game.

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

Kids must move fast to find addition pairs that total a target sum within 20.

Children will solve addition word problems in order to help Roly make it across the river!

Children use their knowledge of addition to snap pictures of unique dinosaurs in this fun math game!