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

In this water rafting adventure, children will be asked to choose the equation that adds up to 10.

Children race down the river and across the finish line by choosing the equations that make 20.

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.

In this underwater game, children choose the correct subtraction expression for a given fact family.

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

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

To practice place value, kids bake chocolate squares in increments of tens and ones.

Kids add buildings to the cityscape using tens and ones blocks.

Kids find numbers with tens and ones in this place value game show!

Kids make three-digit numbers with hundreds, tens, and ones in this game.

Kids pick the right set of peapods to demonstrate their knowledge of ones and tens.

Pass the peas! Kids identify two-digit numbers based on tens and ones.

Help kids build place value understanding by fixing this machine with tens and ones.

Kids must count up tens and ones to identify the number in this place value game.

Kids must find shapes hidden in the museum in this interactive math game.

Kids compare objects by their length and height to place them in the correct order.

Kids learn all about taking away in this interactive puzzle with a subtraction image.

Kids must find the item that doesn't belong in this categorizing quiz.

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

Kids sort items based on the materials they're made with: brick, straw or sticks.

Kids must quickly add or subtract two-digit numbers to save the day.

In this matching game, first graders look at subtraction facts that are missing factors.

It’s a quarter 'til! Practice telling time to the quarter-hour in this game for second graders.

Kids must use a number line to compare numbers in this simple math game.