3. Estimation
6. HCF and LCM
7. Integers
8. Fractions
10. Decimals
12. Unitary Method
13. Percentage
14. Profit and Loss
15. Simple Interest
16. Exponents
19. Mensuration
20. Geometry
20.1. Lines and Angles
20.1.1. Types of Angles
20.1.1.1. Complementary and Supplementary Angles
20.1.1.2. Linear Pair of Angles
20.1.1.3. Vertically Opposite Angles
20.1.1.4. Angles Around a Point
20.2. Triangles
20.3. Congruence
23. Probability
24. Data Handling
Italy