Grade 1 Chapter 8: Addition and Subtraction within 20

8.1 Ways to Add

  • Making a Ten: Adding Within 20


8.1 Ways to Add

  • Making a Ten Using Number Bonds

8.1 Ways to Add

  • Mental Math: Addition within 20: Doubles 


8.1 Ways to Add

  •  Mental Math: Addition within 20: Add the Ones


8.2 Ways to Subtract

  • Mental Math: Subtraction within 20: Subtract the Ones 


8.2 Ways to Subtract

  • Mental Math: Subtraction within 20: Subtract from Ten, Add the Ones


8.3 RW Problems: Addition and Subtraction Facts

  • True/False Statements


Available Resources:

Addition and Subtraction Fluency Resources

  • Spin It to Make 10!
  • Making Ten- Facts to 20
  • Using Doubles Puzzles
  • Double Down Dice
  • Tens and Ones: Addition and Subtraction within 20

Number Sense to 10

  • True/False Statements


Complete and Continue