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

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

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

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

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

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

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