3. Addition 
 4. Subtraction 
 7. Division 
 9. Patterns 
 10. Rounding Numbers 
 11. Fractions 
 12. Decimals 
 13. Money 
 14. Measurement 
 15. Unitary Method 
 16. Geometry 
 19. Symmetry 
 20. Time 
 20.1. Clock 
 20.1.2. Measuring Time 
 20.1.3. 24-Hour Clock Time 
 20.1.4. Use of 'AM' and 'PM' 
 20.1.5. Addition and Subtraction of Time 
 20.2. Calendar 
 21. Data Handling 
 Global
 Global