Practice addition under 20 with visual models in this useful math worksheet!

Use your addition skills to build your own number city in this unique worksheet!

Sharpen your single-digit addition skills with this helpful first- and second-grade worksheet!

Not only does this worksheet bolster kids' addition skills, it's a great mental math exercise, too.

There are 10 gifts under the Christmas tree, but they're missing their colors. Your child will use his math and creative skills to color them in this worksheet.

Practice adding doubles with this colorful worksheet!

Practice adding multi-digit numbers in this second- and third-grade worksheet!

Can you decode the secret message hidden in these addition problems?

With this worksheet, your second graders will be adding up two-digit and three-digit numbers with ease.

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

Double the numbers equals double the fun! Practice adding with near-doubles in this engaging math worksheet.

Measure your way to the right answer by using this handy number line to solve word problems about adding length.

Practice three-digit addition using open number lines with this second-grade math worksheet!

Get more practice performing three-digit addition using open number lines with this second-grade math worksheet!

Get even more practice performing three-digit addition using open number lines with this second-grade math worksheet!

Sail smoothly through addition practice with this hundred chart worksheet for first and second graders!

Practice multi-digit addition with this hundred chart worksheet for second graders! 

Give your kids extra addition practice with this worksheet, which teaches them that it's best to focus on the tens first.

Test your skills with addition in this essential compensation worksheet!

Represent ones and tens with crayons in this fun worksheet.

Represent tens and ones with crayons in this fun worksheet.

Test your addition skills with this hands-on math worksheet!

In this worksheets, learn how to add the tens first when using a hundreds chart.

Hop, skip, and jump using compensation in this second- and third-grade addition worksheet!

Create models of addition problems with this compensation worksheet for second and third graders!

Jump forward and backward on a number line to solve addition problems in this engaging worksheet!

Work with doubles and hone your addition skills in this helpful math worksheet!

Practice solving near-doubles facts with this engaging worksheet!