Subtracting 1

Help Sheet

• 1 - 1 = 0
• 2 - 1 = 1
• 3 - 1 = 2
• 4 - 1 = 3
• 5 - 1 = 4
• 6 - 1 = 5
• 7 - 1 = 6
• 8 - 1 = 7
• 9 - 1 = 8
• 10 - 1 = 9