SUBTRACTION

Chapter 1: You Know More Than You Think

Chapter 2: The Subtraction Table

Chapter 3 What Makes Sense

Chapter 4: Rows 1 and 2

Chapter 6: Patterns

Chapter 5: More on Row 3

Chapter 7: A Really Useful Trick

Chapter 8: Finishing Row 3

Chapter 9: Trickery

Chapter 10: Kevin and Kate Double Down

Chapter 11: Finishing Row 4

Chapter 12: Finishing the Table

Chapter 13: Extending the Table

MULTIPLICATION