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Adding large numbers can be tough, but rounding makes it easy. Use rounding to the nearest 100 to make complicated addition problems simple.

Adding and Rounding to the Nearest 100

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

Three-Digit Addition Cards

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

Addition with Carrying #4

Use this glossary with the EL Support Lesson Plan: Compare & Contrast Addition Strategies.

Glossary: Compare & Contrast Addition Strategies

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.

Addition Within 1000 Check-in

Use these vocabulary cards with the EL Support Lesson Plan: Compare & Contrast Addition Strategies.

Vocabulary Cards: Compare & Contrast Addition Strategies

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

Flower Power Addition #3

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

Glossary: Comparing Strategies for Three-Digit Addition

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

Vocabulary Cards: Comparing Strategies for Three-Digit Addition

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

Math Notes: Three-Digit Addition

Searching for a worksheet that practices addition regrouping? This printable is perfect for practicing addition skills like carrying the tens column.

Addition Regrouping

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

Three-Digit Addition

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

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.

Addition with Carrying #9

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

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.

Partial Sums

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?

Addition with Carrying #7

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

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

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.

Mixed Operation Word Problem Check-in

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

Adding Three-Digit Numbers on an Open Number Line #1

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

Adding Three-Digit Numbers on an Open Number Line #2

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

Adding Three-Digit Numbers on an Open Number Line #3

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

Extra Practice: Three-Digit Addition with Regrouping

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

Math-Go-Round: Addition (Expert)

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

Flower Power Addition #4

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

Add Three-Digit Numbers

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

Subtraction Practice

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

Place Value Chart Addition With Regrouping: Sums to 1,000 #1

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

Place Value Chart Addition With Regrouping: Sums to 1,000 #3

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