3. Addition
4. Subtraction
7. Division
10. Patterns
11. Rounding Numbers
12. Fractions
13. Decimals
14. Money
15. Measurement
16. Unitary Method
17. Geometry
20. Symmetry
21. Time
21.1. Clock
21.1.2. Measuring Time
21.1.3. 24-Hour Clock Time
21.1.4. Use of 'AM' and 'PM'
21.1.5. Addition and Subtraction of Time
21.2. Calendar
22. Data Handling