# Course: Abacus • Year 1 • Workbook 3

• 1 More, 1 Less; 10 More, 10 Less
• Add and Subtract 1 and 10
• Adding and Subtracting with Cartoons
• Finding Totals of 10p and Stacks
• 10s and 1s in 2-Digit Numbers
• Number Bonds
• Bonds to 6, 7, 8 and 9
• Additions Totalling More Than 10
• Adding 10 Using a Number-Square
• Add and Then Subtract 10
• How Heavy?
• Heavier and Lighter
• Capacity
• Halving Numbers of Dots up to 12
• Matching Equivalent Amounts of Money
• Gaps in a 100-Square
• Ordering Numbers and Finding Numbers Between
• Ordering 2-Digit Numbers and Writing Numbers Between
• Ordering Groups of 2-Digit Numbers
• Creating 2-Digit Numbers
• Identifying Odd and Even Numbers
• Numbers Sequences
• Complete the Patterns
• Multiplying by 2, 5 and 10
• Doubling
• Halving and Doubling Machine
• Doubles up to 10
• Halving
• O’Clock
• Fruit Table
• Shapes and Patterns
• Addition Using Bonds to 6, 8 and 9
• Subtraction Using Numbers Bonds
• Bonds to 10
• Finding Change from 20p on a Money Line
• Identifying Numbers
• 2-Digit Number Calculations