Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 297 · 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.Find the compound interest on ₹42500 at 8% per year for 2 years, compounded every year (in ₹).
2. 2.What amount will ₹59500 grow to in 1 year at 5% per year compound interest (in ₹)?
3. 3.What amount will ₹10700 grow to in 1 year at 4% per year compound interest (in ₹)?
4. 4.What amount will ₹43000 grow to in 3 years at 20% per year compound interest (in ₹)?
5. 5.What amount will ₹25000 grow to in 2 years at 8% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
7. 7.A town has 8500 people. The population grows by 20% every year. What will the population be after 3 years?
8. 8.A scooter is worth ₹48000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
9. 9.A town has 15000 people. The population grows by 20% every year. What will the population be after 1 year?
10. 10.Find the compound interest on ₹32500 at 8% per year for 2 years, compounded every year (in ₹).
11. 11.What amount will ₹50000 grow to in 2 years at 4% per year compound interest (in ₹)?
12. 12.Find the compound interest on ₹40800 at 8% per year for 1 year, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹27200 at 15% per year for 2 years (in ₹)?
14. 14.What amount will ₹8100 grow to in 2 years at 10% per year compound interest (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?
16. 16.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
17. 17.What amount will ₹15300 grow to in 1 year at 8% per year compound interest (in ₹)?
18. 18.A scooter is worth ₹12500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
19. 19.What amount will ₹32500 grow to in 2 years at 8% per year compound interest (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹30400 at 20% per year for 2 years (in ₹)?
21. 21.A scooter is worth ₹27000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹52800 at 5% per year for 2 years (in ₹)?
23. 23.Find the compound interest on ₹41500 at 4% per year for 1 year, compounded every year (in ₹).
24. 24.What amount will ₹47800 grow to in 2 years at 10% per year compound interest (in ₹)?
25. 25.Find the compound interest on ₹39600 at 25% per year for 2 years, compounded every year (in ₹).
26. 26.A scooter is worth ₹35000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹36900 at 20% per year for 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹8400 at 25% per year for 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹52000 at 25% per year for 2 years (in ₹)?
30. 30.A scooter is worth ₹32200. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
31. 31.A town has 14900 people. The population grows by 4% every year. What will the population be after 1 year?
32. 32.What amount will ₹34600 grow to in 1 year at 10% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹32800 at 10% per year for 2 years (in ₹)?
34. 34.Find the compound interest on ₹5000 at 20% per year for 1 year, compounded every year (in ₹).
35. 35.What amount will ₹41000 grow to in 3 years at 10% per year compound interest (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹21200 at 5% per year for 2 years (in ₹)?
37. 37.A town has 40000 people. The population grows by 12% every year. What will the population be after 2 years?
38. 38.Find the compound interest on ₹35200 at 25% per year for 3 years, compounded every year (in ₹).
39. 39.What amount will ₹44600 grow to in 2 years at 20% per year compound interest (in ₹)?
40. 40.What amount will ₹11600 grow to in 2 years at 5% per year compound interest (in ₹)?

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