Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 635 · 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.What amount will ₹5000 grow to in 1 year at 15% per year compound interest (in ₹)?
2. 2.A scooter is worth ₹19600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
3. 3.A town has 7700 people. The population grows by 4% every year. What will the population be after 1 year?
4. 4.What amount will ₹5900 grow to in 1 year at 8% per year compound interest (in ₹)?
5. 5.A town has 39800 people. The population grows by 10% every year. What will the population be after 2 years?
6. 6.What is the difference between the compound interest and the simple interest on ₹24700 at 20% per year for 2 years (in ₹)?
7. 7.What amount will ₹53200 grow to in 2 years at 25% per year compound interest (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹57500 at 4% per year for 2 years (in ₹)?
9. 9.What amount will ₹55600 grow to in 1 year at 12% per year compound interest (in ₹)?
10. 10.A scooter is worth ₹34800. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
11. 11.A scooter is worth ₹9000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
12. 12.A town has 38000 people. The population grows by 5% every year. What will the population be after 2 years?
13. 13.A town has 23800 people. The population grows by 4% every year. What will the population be after 1 year?
14. 14.A scooter is worth ₹48000. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹43000 at 20% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹3600 at 25% per year for 2 years, compounded every year (in ₹).
17. 17.What amount will ₹10800 grow to in 1 year at 12% per year compound interest (in ₹)?
18. 18.What amount will ₹15000 grow to in 1 year at 15% per year compound interest (in ₹)?
19. 19.A town has 2100 people. The population grows by 20% every year. What will the population be after 2 years?
20. 20.What is the difference between the compound interest and the simple interest on ₹52000 at 25% per year for 2 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹5000 at 4% per year for 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹46700 at 10% per year for 2 years (in ₹)?
23. 23.Find the compound interest on ₹19300 at 20% per year for 1 year, compounded every year (in ₹).
24. 24.What amount will ₹56500 grow to in 1 year at 5% per year compound interest (in ₹)?
25. 25.Find the compound interest on ₹39100 at 5% per year for 1 year, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹55600 at 15% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹35800 at 10% per year for 1 year, compounded every year (in ₹).
28. 28.What is the difference between the compound interest and the simple interest on ₹41800 at 20% per year for 2 years (in ₹)?
29. 29.What amount will ₹26500 grow to in 1 year at 10% per year compound interest (in ₹)?
30. 30.A scooter is worth ₹44800. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
31. 31.A scooter is worth ₹42000. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹7500 at 8% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹17500 at 20% per year for 3 years, compounded every year (in ₹).
34. 34.A scooter is worth ₹44700. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
35. 35.A town has 23700 people. The population grows by 15% every year. What will the population be after 1 year?
36. 36.What amount will ₹24000 grow to in 3 years at 15% per year compound interest (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹10000 at 15% per year for 2 years (in ₹)?
38. 38.What amount will ₹50000 grow to in 3 years at 10% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹56200 at 15% per year for 1 year, compounded every year (in ₹).
40. 40.What amount will ₹11800 grow to in 1 year at 10% per year compound interest (in ₹)?

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