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
24. Probability
25. Data Handling
25.2. Mean, Median, and Mode
25.2.1. Mean
25.2.2. Median
25.2.3. Mode
25.2.3.1. Mode of Ungrouped Data
25.2.3.2. Empirical Formula for Calculating Mode
25.3. Bar Graphs
25.4. Pie Charts
25.5. Line Graphs
Japan