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  3. Square and Square Roots
  4. Square of a Number
  5. Sum of First n Odd Natural Numbers
Grade 8
1. Rational Numbers
2. Square and Square Roots
2.1. Square of a Number
2.1.1. Square of a Number
2.1.2. Perfect Square or Square Numbers
2.1.3. Properties of Perfect Squares
2.1.4. Sum of First n Odd Natural Numbers
2.1.5. Pythagorean Triplets
2.1.6. Using Identities to Find the Square of a Number
2.1.7. Product of Two Consecutive Odd or Consecutive Even Numbers
2.2. Square Root
2.3. Square Root by Long-Division Method
3. Cube and Cube Roots
4. Exponents
5. Direct and Inverse Proportions
6. Time and Work
7. Percentage
8. Profit and Loss
9. Compound Interest
10. Algebraic Expressions
11. Linear Equations in One Variable
12. Factorization
13. Playing with Numbers
14. Geometry
15. Graphs
16. Mensuration
17. Volume and Surface Area
18. Three-Dimensional Figures
19. Probability
20. Data Handling

Grade 8 Sri Lanka School Math Sum of First n Odd Natural Numbers

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