Children will put their three-digit addition skills to the test as they solve 23 practice problems in this math worksheet.

Bolster your third grader's addition skills with at-home practice in three-digit addition.

Word problems make for great assessment tools because they require a complete understanding of the math concepts. Use this assessment to evaluate your students' abilities to add and subtract three-digit numbers using mixed operation word problems.

Children practice writing numbers from expanded forms, and expanded forms from numbers.

Children practice finding the sum of two three-digit whole numbers, with no regrouping, in this math worksheet.

Let's see how those addition skills have blossomed over the course of the year! Use this quick math assessment to gauge your students' abilities to add three-digit numbers, both with and without regrouping.

Let your child get in some extra addition practice with this worksheet perfect for carrying beginners.

Once your child masters addition with carrying, there's practically no number too big for her to add!

What does carrying have to do with math? Help your second grader find out with this worksheet full of big number addition and carrying hints.

Adding up big numbers can be tricky. Teach your budding mathematician a helpful trick to keep the numbers in line with carrying!

This math fluency checklist is a great tool that can be used to encourage students to use different strategies to solve math problems efficiently and accurately.

Is your second grader ready to step up her carrying skills? This intermediate worksheet will test her powers of addition!

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

Carrying over takes a bit of practice. Give your second grade mathematician a boost with these practice problems.

How are your students coming along in their three-digit addition skills? Use this spring math assessment to gauge your students' abilities to add within 1,000.

If your child likes to carry, then this is the worksheet for her!

Does your child ever wonder where to put the numbers she carries over in addition problems? He'll wonder no more with this helpful worksheet!

Help your child get used to addition with carrying so that she'll be all ready to go by the time it's introduced in school.

This worksheet isn't for beginners! Let your math savvy kid take on this carrying challenge. Can he add up these big numbers to find the correct sum?

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

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

Your second grader and his handy addition skills are needed! Can he help Ralph keep track of his hollyhock's growth?

A board game perfect for sharpening your 1st-grader's addition skills.

Can your second grader use her addition ability to chart the growth of Augusto's snapdragon?

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!

Add multi-digit numbers with ease in this colorful second-grade math worksheet!

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

Master addition using a place value chart with this engaging second-grade worksheet!