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

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

In this energizing math game, think about how different numbers can add up to 20.

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

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

Add it up! Kids must use mental addition to match each equation to its answer.

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

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

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

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

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

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