Topic outline

    • Quiz icon
      Exercise 16. Addition and Subtraction Quiz
      Not available unless: The activity Exercise 15. Count by 3 from 3 to 192 is marked complete
    • Quiz icon
      Exercise 17. Addition and subtraction Quiz
      Not available unless: The activity Exercise 16. Addition and Subtraction is marked complete
    • Quiz icon
      Exercise 18. Addition and subtraction: Related facts Quiz
      Not available unless: The activity Exercise 17. Addition and subtraction is marked complete
    • Quiz icon
      Exercise 19. Exploring Addition Quiz
      Not available unless: The activity Exercise 18. Addition and subtraction: Related facts is marked complete
    • Quiz icon
      Exercise 20. Add and subtract one-digit and two-digit numbers Quiz
      Not available unless: The activity Exercise 19. Exploring Addition is marked complete