Use these strategy cards to help students develop their compare and contrast skills, along with deepening their understanding of three-digit addition.

Use this glossary with the EL Support Lesson Plan: Comparing Strategies for Three-Digit Addition.

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

Use these vocabulary cards with the EL Support Lesson Plan: Comparing Strategies for Three-Digit Addition.

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

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!

Help your students apply strategies when solving addition problems. This worksheet provides practice for using number lines to solve addition problems with three-digit numbers.

Challenge yourself to solve three-digit addition problems in this colorful worksheet!

Get more practice adding two-digit numbers on open number lines with this inviting addition worksheet!

Try this bright worksheet to give your first grader some at-home practice with adding three numbers!

If your child is confident in their addition skills, challenge them to tackle addition with three numbers.

Adding two numbers? Too easy. See if your kindergarten math whiz can add three!

Learn to perform addition with three-digit numbers in this essential worksheet!

Track down tens to solve addition problems with three addends!

Kids look for keywords to determine how to solve each problem with this three-step addition worksheet.

Use place value to add three-digit numbers with this second-grade worksheet!

If your child is looking for a number challenge, we've got the worksheet for her. She may be a whiz at adding two numbers, but can she add three numbers?

Add three numbers by making a 10 in this first-grade worksheet!

Teach your students to solve word problems with three addends. Plenty of space is provided for students to show their thinking!

Can your first grader practice adding three numbers together to help these working people do their jobs?

Sports stars, liven your math practice with some baseball addition! Your child will get to practice his addition facts (simple one-digit addition problems).