2. Integers

3. Fractions

4. Decimals

7. Percentage

10. Exponents

13. Mensuration

14. Geometry

15.1. Linear Symmetry

15.2. Rotational Symmetry

15.2.1. Rotational Symmetry in Figures

15.2.3. Rotational Symmetry in Alphabets

17. Probability

18. Data Handling