Liven up addition for your first grader; this brightly colored worksheet's full of fireworks and fun.

Santa has left lots of colorful presents filled with addition facts for your first grader to practice!

Ho ho ho! Santa has left lots of colorful presents filled with addition facts for your first grader to practice.

First and second graders will LOVE finding the missing numbers in this adorable Valentine’s Day math puzzle!

Prepare your first grader for Valentine's Day with these sweet math problems to help her review her addition math facts.

Happy Valentine's Day! Your first grader will color all the candies in this heart-shaped box while solving some sweet math problems.

Put a little love into math practice with these sweet Valentine's Day addition problems, where your first grader can review his math facts.

Enjoy an egg-cellent Easter review of addition facts! Hunt for a solution in each colorful egg, with simple addition problems for your first grader to solve.

Here's an Easter egg hunt with a twist! Each egg in this festive worksheet contains one simple addition problem for your first grader to solve.

Can your first grader dig through a leafy mess to find the numbers that are added together for each clover? He'll come out of it with stronger addition skills!

The Easter bunny's been busy hiding colorful eggs all over the yard. Each one has a simple addition problem for your first grader to solve.

Children practice addition within 20 in this fall-themed math worksheet.

Children practice addition within 20 in this fall-themed math worksheet.

Enjoy a Halloween-themed race to 100 as students imagine units, rods, and flats as candies, broomsticks, and pumpkins. Players will use this pumpkin race board to regroup between place values up to the hundreds place in order to win the game!

Children practice addition within 20 in this fall-themed math worksheet.

Children practice addition within 20 in this fall-themed math worksheet.

Children practice addition within 20 in this fall-themed math worksheet.

Practice addition within 10 with this Halloween math workheet!

Practice addition within 10 with this Halloween math workheet!

Practice addition within 10 with this Halloween math workheet!

Practice addition within 10 with this Halloween math workheet!

Practice addition within 20 with this Halloween math workheet!

If you want to get your child in the Valentine's Day mood and improve her addition and mental math ability, this pretty printable is sure to do the trick.

Practice addition and subtraction within 20 with this sweet Valentine’s Day math puzzle!

Get ready for some merry math practice this Christmas! Santa has left lots of colorful presents filled with simple addition facts.

Merry Christmas! To help your child stay sharp during the holiday, Santa has left lots of colorful presents filled with addition facts for your child to solve.

Build math and reading skills with some sweet Valentine's Day word problems! Kids will practice basic addition and subtraction.

Have some math and coloring practice with your chocolates in this Valentine's Day mental math worksheet. Your kid will solve addition and subtraction problems.

Have a happy Valentine's Day with this combination math and color-by-number worksheet. Your kid will use mental math skills to color in the pictured chocolates.

Count and add the Halloween pictures in this simple addition worksheet!