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3rd Grade Three-Digit Numbers Common Core Multi-Digit Addition Resources

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

Add Three-Digit Numbers

Kids solve two- and three-digit addition problems by regrouping in order to help the Professor grow out his beard.

Two- and Three-Digit Addition

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

3-Digit Addition

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

Three-Digit Addition

Teach students how to extract information from word problems and complete three digit addition to find the solution.


Three-Digit Addition Word Problems

Use this resource to assess students’ abilities to solve a variety of word problems.

Word Problems Check-Up

Three digit addition just got much simpler thanks to this exercise that illustrates how to regroup numbers.


Three-Digit Addition and Regrouping Numbers

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

Add It Up! Three-Digit Numbers

This resource gives your learners practice solving multi-step word problems with mixed operations. They will use addition, subtraction, or both operations.

Stepping Through Addition and Subtraction Word Problems Practice

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

Practice Word Problem Subtraction

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.

Practice Adding Three-Digit Numbers on an Open Number Line

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

Subtraction Practice

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.

Three-Digit Addition: Part 1

Addition will probably be the most basic and most constant use of math for any kid or adult. This worksheet will give your child lots of practice with it.

Round & Add

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.

Math Fluency Checklist

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

Addition with Carrying #3

The best way to solve a complicated problem is to break it down. Help your students use the Read, Write, Draw strategy to solve word problems with this worksheet.

Word Problem Solving Template - Read, Draw, Write

Use this exercise to give your students practice solving word problems with addition, subtraction, or a mix of both operations.

Stepping Through Addition and Subtraction 

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.

Three-Digit Addition: Part 2

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

Addition with Carrying #10

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

Addition with Carrying #2

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.

Carry Over

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

Addition with Carrying #8

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

Addition with Carrying #6

In this worksheet that contains a storyline about a bakery, students will solve two-step, three-digit addition problems.

Karen's Busy Bakery

Use this glossary with the EL Support Lesson: Thinking Deeply About Word Problems.

Glossary: Thinking Deeply About Word Problems

With this worksheet students will practice using the number line strategy to add three-digit numbers.

Hop to It!

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!

Addition with Carrying #5

Go on a number adventure with this jungle-themed worksheet. Kids will use their number know-how to order numbers and clear a path through the jungle.

Jungle Numbers #9

Use these vocabulary cards with the EL Support Lesson: Thinking Deeply About Word Problems.

Vocabulary Cards: Thinking Deeply About Word Problems

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3rd Grade Three-Digit Numbers Common Core Multi-Digit Addition Resources

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