Addition and Subtraction

Basic Addition

• 1

  Introduction to Addition

  

  • What is Addition?

  • Writing Expressions

  • Solving Problems

  • Practice!

• 2

  Adding Two- and Three-Digit Numbers

  

  • Adding Larger Numbers
    

  • Solving Stacked Addition Problems

  • Using Carrying

  • Practice!

• Addition

Basic Subtraction

• 3

  Introduction to Subtraction

  

  • What is Subtraction?

  • Writing Expressions

  • Solving Problems

  • Practice!

• 4

  Subtracting Two- and Three-Digit Numbers

  

  • Subtracting Larger Numbers

  • Solving Stacked Subtraction Problems

  • Borrowing

  • Checking Your Work

  • Practice!

• Subtraction

Learn More

• Money Basics

• Money

• Multiplication and Division