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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

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

Strategy Cards: 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

Practice adding 3&nbsp;to numbers within 10 with this first-grade addition worksheet!

Adding Three

If your child is confident in their addition skills, challenge them to tackle addition with three numbers.

Three Pigs Addition: Adding Three Numbers

Adding two numbers? Too easy. See if your kindergarten math whiz can add three!

Add Three Numbers

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

3-Digit Addition

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

Add Three-Digit Numbers

Use these vocabulary cards with the EL Support Lesson: Cube Trains.

Vocabulary Cards: Cube Trains

Use these vocabulary cards with the EL Support Lesson:  Lets Add!

Vocabulary Cards: Lets Add!

Use these vocabulary cards with the EL Support Lesson: Nature Counting.

Vocabulary Cards: Nature Counting

Try this bright worksheet to give your first grader some at-home practice with adding three numbers!

Adding Three Numbers

Kids look for keywords to determine how to solve each problem with this three-step addition worksheet.

Add All Three

Use the worksheet to help students visualize addition number sentences with three addends. Kids build 10 cube trains using three different color cubes, color their trains, and then write out the equations.

Three Part Cube Trains

Print these handy number cards on card stock and use them to practice number recognition and basic facts. For a fun twist, cards can be used to play Addition Number Grab, a variation of War!

1–10 Number Cards

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

Three-Digit Addition

Use these vocabulary cards with the EL Support Lesson Plan: What Are Arrays?

Vocabulary Cards: What Are Arrays?

Use these vocabulary cards with the EL Math Support Lesson: Multiples of 10.

Vocabulary Cards: Multiples of 10

If your child is looking for a number challenge, we've got the worksheet for her. She may be a whiz at adding two numbers, but can she add three numbers?

Add All Three: Adding Three Numbers

Use these vocabulary cards with the EL Support Lesson: Word Problem Comprehension.

Vocabulary Cards: Word Problem Comprehension

Use these vocabulary cards with the EL Support Lesson: Fact Family Houses.

Vocabulary Cards: Fact Family Houses

Use these vocabulary cards with the EL Support Lesson: Add Them Up!

Vocabulary Cards: Add Them Up!

Use these vocabulary cards with the EL Support Lesson: Decimal Word Problems.

Vocabulary Cards: Decimal Word Problems

Use these vocabulary cards with the EL Support Lesson: Addition Problem Solving.

Vocabulary Cards: Addition Problem Solving 

Use these vocabulary cards with the EL Support Lesson Plan: Adding Within 20.

Vocabulary Cards: Adding Within 20

Use these vocabulary cards with the EL Support Lesson Plan: Fact Family Triangles.

Vocabulary Cards: Fact Family Triangles

Learning addition is as easy as 1-2-3! Give your child a head start on addition with this counting worksheet.

Count and Add #3

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

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

Add It Up! Three-Digit Numbers

This coloring page dot-to-dot uses skip counting as an unexpected way to tie in multiplication learning and reviewing multiples of three!

Skip Count by Three

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