- Subtraction and addition - single digits - problem solving
- Subtracting 10 - problem solving
- Subtracting 20 - problem solving
- Subtracting 30 - problem solving
- Subtracting 40 - problem solving
- Subtracting 50 - problem solving
- Subtracting multiples of 10 - problem solving
- Subtracting multiples of 100 - problem solving
- Subtraction (two steps) - problem solving