Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 738 · 40 sums

The method (Grow it every year): Year by year: new amount = amount × (100 + R) ÷ 100. Amount after T years = P × (1 + R/100)ᵀ; compound interest = amount − P. A value falling by R% each year: × (100 − R) ÷ 100 every year. For 2 years, CI − SI = P × R × R ÷ 10000.

1. 1.A scooter is worth ₹10000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
2. 2.A town has 30500 people. The population grows by 15% every year. What will the population be after 1 year?
3. 3.Find the compound interest on ₹23100 at 15% per year for 1 year, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹8400 at 15% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹5800 at 12% per year for 1 year, compounded every year (in ₹).
6. 6.A scooter is worth ₹8200. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
7. 7.What amount will ₹6400 grow to in 2 years at 15% per year compound interest (in ₹)?
8. 8.A town has 10000 people. The population grows by 4% every year. What will the population be after 2 years?
9. 9.What is the difference between the compound interest and the simple interest on ₹43600 at 15% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹27500 at 8% per year for 2 years, compounded every year (in ₹).
11. 11.Find the compound interest on ₹44400 at 5% per year for 1 year, compounded every year (in ₹).
12. 12.Find the compound interest on ₹56000 at 25% per year for 1 year, compounded every year (in ₹).
13. 13.A scooter is worth ₹27700. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
14. 14.Find the compound interest on ₹10100 at 15% per year for 1 year, compounded every year (in ₹).
15. 15.What amount will ₹32900 grow to in 1 year at 8% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹34800 at 15% per year for 2 years, compounded every year (in ₹).
17. 17.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
18. 18.A town has 39500 people. The population grows by 20% every year. What will the population be after 3 years?
19. 19.Find the compound interest on ₹57400 at 10% per year for 1 year, compounded every year (in ₹).
20. 20.What is the difference between the compound interest and the simple interest on ₹22400 at 5% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹44100 at 25% per year for 1 year, compounded every year (in ₹).
22. 22.Find the compound interest on ₹32500 at 8% per year for 2 years, compounded every year (in ₹).
23. 23.Find the compound interest on ₹51600 at 25% per year for 1 year, compounded every year (in ₹).
24. 24.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
25. 25.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹40000 at 4% per year for 2 years (in ₹)?
27. 27.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
28. 28.What amount will ₹42200 grow to in 2 years at 10% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹17500 at 8% per year for 2 years, compounded every year (in ₹).
30. 30.What amount will ₹28000 grow to in 3 years at 20% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹11200 at 5% per year for 2 years, compounded every year (in ₹).
32. 32.What amount will ₹56900 grow to in 1 year at 10% per year compound interest (in ₹)?
33. 33.What amount will ₹42500 grow to in 2 years at 8% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹56000 at 15% per year for 3 years, compounded every year (in ₹).
35. 35.Find the compound interest on ₹35200 at 15% per year for 1 year, compounded every year (in ₹).
36. 36.A scooter is worth ₹52500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
37. 37.A town has 5600 people. The population grows by 25% every year. What will the population be after 2 years?
38. 38.What amount will ₹17700 grow to in 1 year at 20% per year compound interest (in ₹)?
39. 39.What amount will ₹6600 grow to in 2 years at 20% per year compound interest (in ₹)?
40. 40.What amount will ₹54400 grow to in 3 years at 25% per year compound interest (in ₹)?

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