Use this glossary with the EL Support Lesson Plan: Thinking About Three-Digit Numbers.

Reinforce your third grader's subtraction skills with this helpful worksheet that's packed with three digit-subtraction problems.

Use this math worksheet to round three-digit numbers using vertical number lines.

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

Kids try to "catch" the bouncy balls on this second grade math worksheet by solving subtraction problems with three-digit numbers using regrouping.

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

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

Kids solve subtraction problems with three-digit numbers using regrouping in this third grade math worksheet.

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: Writing Three-Digit Number Names.

Use these vocabulary cards with the EL Support Lesson Plan: Thinking About Three-Digit Numbers.

Give your little math whiz a new challenge: adding multiple sets of numbers! He'll get practice adding up three sets of two-digit numbers.

Get even more practice performing three-digit subtraction using an open number line with this second-grade math worksheet!

Children stretch their regrouping skills as they solve three-digit subtraction word problems.

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.

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.

Are your students' math skills greater than or less than your expectations? Use this quick assessment to gauge your second graders' understanding of three-digit numbers.

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

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.

Practice three-digit subtraction using an open number line with this second-grade 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.

How are your students coming along in their three-digit subtraction skills? Use this spring math assessment to gauge your students' understanding of regrouping and abilities to subtract within 1,000.

In this practice worksheet, students solve 15 three-digit subtraction problems with regrouping.

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

Get more practice performing three-digit subtraction using an open number line with this second-grade math worksheet!

Help your kid practice her addition skills with these two-digit addition problems, then work up to the three-digit plus two-digit problems!

Help your child practice adding four-digit and three-digit numbers! This Easter-themed math worksheet is more interesting than your average printable.

Students practice solving long division problems featuring multi-digit dividends in this quiz-style worksheet!

Practice multiplying one-digit by multi-digit numbers using arrays with this great multiplication strategy worksheet!