1. Integers
4. HCF and LCM
5. Fractions
7. Decimals
8. Estimation
11. Unitary Method
12. Percentage
13. Profit and Loss
14. Simple Interest
15. Exponents
18. Mensuration
20. Geometry
20.1. Lines and Angles
20.2. Triangles
20.2.3. Properties of a Triangle
20.2.3.1. Angle Sum Property of a Triangle
20.2.3.2. Exterior Angle Property of a Triangle
20.2.3.3. Triangle Inequality
20.2.3.4. Pythagoras' Theorem
20.3. Polygon
20.4. Quadrilaterals
20.5. Congruence
24. Probability
25. Data Handling
Italy