3. Addition
4. Subtraction
5.4.1. Multiply by 0
5.4.2. Multiply by 1
5.4.3. Multiply by 2
5.4.4. Multiply by 3
5.4.5. Multiply by 4
5.4.6. Multiply by 5
5.4.7. Multiply by 6
5.4.8. Multiply by 7
5.4.9. Multiply by 8
5.4.10. Multiply by 9
5.4.11. Multiply by 10
6. Division
7. Fractions
8. Measurement
9. Time
10. Shapes