2. Arithematic
2.1. Numbers
2.3. Fractions
2.5. Decimals
2.6. Unitary Method
2.7. Rounding Numbers
2.8. Percentage
2.9. Profit and Loss
2.10. Simple Interest
2.12. Mensuration
2.12.3. Perimeter of a Triangle
2.12.4. Perimeter of Polygons
2.12.6. Area and Perimeter of a Square
2.13. Time
2.14. Data Interpretation