Use this worksheet to continue practice with two addition strategies: expanded notation and standard algorithm. Students will be challenged to solve three-digit addition problems and then check their work using multiple methods.

Learners will solve 20 two- and three-digit addition problems in this versatile practice worksheet.

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

Use this worksheet to practice two strategies for solving three-digit addition problems. Students will flex their math muscles as they use both the expanded notation and standard algorithm strategies to solve challenging math problems.

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

Give students practice adding three-digit numbers within 1,000! 

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

This simple worksheet is packed with two-digit and three-digit subtraction problems.

Improve those skills! Practice three-digit addition with these twelve problems.

Use these cards to help students see the difference between adding three-digit numbers using the standard algorithm and expanded notation.

Practice three-digit addition with regrouping in this set of 36 problems.

Kids solve addition problems with three-digit addends using regrouping on this third grade math worksheet.

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.

Practice two-and three-digit subtraction in this set of school-themed word problems!

Practice 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.

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.

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

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

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

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

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

The partial sums method uses place value to help organize multi-digit math problems. Help your child master this strategy with a few practice problems.

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

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.