1. Ratio I

2. Ratio II

3. Ratio III

4. Ratio IV

5. Percentage - Conversion I

6. Percentage - Conversion II

7. Percentage I

8. Percentage II

9. Percentage III

10. Percentage IV

11. Percentage - Application problems I

12. Percentage - Application problems II

13. Calculate the Profit Percentage

14. Calculate the profit percentage II

15. Calculate the loss percentage

16. Calculate the loss percentage II

17. Simple interest I

18. Simple interest II

19. Simple interest III

20. Simple interest IV

21. Simple interest V