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

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

Reinforce your child's three-digit addition skills with this ski-themed learning adventure!

Kids mix up a potion to help Professor Beardo grow out his beard, and practice place value, in this multi-digit addition game.

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

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

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

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

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

Children hone their knowledge of addition and missing addends 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 water-themed race, first graders use math and logic to fill in each addition equation.

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

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

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

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

Kids try to match the equations that equal the same number in this online math game!

Kids add to different target numbers, and must be quick; the balls are dropping fast!

Kids practice adding small numbers in this silly addition game.

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

Your kid represents addition facts with objects by counting Roly's hats.

Children practice adding two-digit and one-digit numbers to dig up fossils in this math game.

Hone first grade addition strategies with this underwater math adventure!

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

Your kid will practice addition by using number pairs to fill a staircase.

Practice essential first grade addition skills in this river-themed math game!

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

First graders gain confidence with addition and decomposing numbers in this fun water rafting game!

Children hone their multi-digit addition skills in this fun race to the finish line!

Math learners hone their multi-digit addition skills in this interactive game show!