The triathlon is a fascinating sporting event, and a great opportunity to learn about addition and comparison.

Children complete an addition chart, then fill in missing addends and sums in this useful practice worksheet.

Santa's left 10 Christmas gifts under the tree, each containing an addition or subtraction problem for your student. She'll also get to do a bit of coloring!

Practice identifying doubles facts with this appealing worksheet!

Make math fun with this doubles facts maze! 

Solve near-doubles facts with this appealing worksheet!

Strengthen your fluency skills with this beach-themed addition worksheet for first and second graders!

Practice solving near-doubles facts with this engaging worksheet!

Master your addition facts with this colorful, inviting math worksheet!

Learn how to use doubles facts to solve other addition problems!

Let’s see how well you know your addition facts!

Try solving near-doubles facts with these nine problems!

Solve an enjoyable maze of doubles facts with this fun one-page worksheet!

Your young learner can have a blast experimenting with addition facts in the Math Lab!

Help first and second graders practice solving near-doubles facts using this fun worksheet!

3...2...1...go! Students will apply their knowledge of addition facts with this speedy worksheet!

This worksheet is a fun way to practice skip counting by seven, addition facts, and number sense skills.

This worksheet is a fun way to practice skip counting by nine, addition facts, and number sense skills.

Strengthen your second grader's ability to tackle his addition facts by adding up the number strings, and uncover a fun fact when he's finished.

These Christmas presents are missing some color! Challenge your second grader to review addition and subtraction facts by solving the equations in these gifts.

Build your child's confidence in knowing math facts, so that he gets nothing but net. Take a shot at addition and subtraction problems!

Enjoy a fun coloring activity while you review simple math facts! Santa has left 10 gifts, each with an addition or subtraction problem to solve.

These Christmas presents are missing some color! Challenge your child to review her addition and subtraction math facts by solving the equations in these gifts.

Don't get left behind in math class this winter break! Help your little one review her addition and subtraction math facts with a fun coloring activity.

Help your little one review math facts with a fun coloring activity. She'll solve and then color the addition and subtraction problems in each Christmas gift.

Help your little one review her math facts with a fun coloring activity, where she'll solve and then color the addition and subtraction problems in each gift.

The fifth page of this series takes things up a notch for your child, whether she's building addition and subtraction facts fluency or just practicing.

Here's one way to reinforce addition facts and basic math vocabulary. Your child can add up the numbers and fill in missing signs in these addition problems.

Your second grader will practice his addition facts and have fun doing it in this math worksheet featuring two-digit addition and a word puzzle at the end!

Practice addition within 10 with this Halloween math workheet!