3. Addition

4. Subtraction

7. Division

9. Patterns

10. Rounding Numbers

11. Fractions

11.4. Division as Fraction

11.5. Fraction as Division

11.7. Equivalent Fractions

11.8. Comparison of Fractions

11.10. Unit Fraction

11.12.1. Addition of Like Fractions

11.12.2. Subtraction of Like Fractions

11.13. Word Problems on Fractions

12. Decimals

13. Money

14. Measurement

15. Unitary Method

16. Geometry

19. Symmetry

20. Time

21. Data Handling