2. Integers
3. Fractions
4. Decimals
5.1. Ratio
5.2. Proportion
7. Percentage
10. Exponents
10.5. Laws of Exponents
13. Mensuration
13.1. Standard Units of Area
14. Geometry
15.1. Linear Symmetry
15.2. Rotational Symmetry
17. Probability
18. Data Handling