2. Arithematic
2.1. Numbers
2.3. Fractions
2.4.1. Finding Factors of a Number
2.4.5. Tests of Divisibility
2.4.7. HCF and LCM
2.4.7.1. HCF (Highest Common Factor)
2.4.7.2. LCM (Lowest Common Multiple)
2.4.7.3. Properties of LCM and HCF
2.4.7.4. Word problems on HCF and LCM
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
2.13. Time
2.14. Data Interpretation