Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 173 · 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 is the difference between the compound interest and the simple interest on ₹10000 at 8% per year for 2 years (in ₹)?
2. 2.A scooter is worth ₹18200. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
3. 3.A scooter is worth ₹22500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
4. 4.What amount will ₹8000 grow to in 2 years at 5% per year compound interest (in ₹)?
5. 5.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
6. 6.What amount will ₹31900 grow to in 1 year at 5% per year compound interest (in ₹)?
7. 7.What amount will ₹5200 grow to in 2 years at 15% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹55000 at 4% per year for 2 years, compounded every year (in ₹).
9. 9.What amount will ₹11500 grow to in 3 years at 20% per year compound interest (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹42400 at 15% per year for 2 years (in ₹)?
11. 11.What amount will ₹25000 grow to in 2 years at 12% per year compound interest (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹20800 at 15% per year for 2 years (in ₹)?
13. 13.What amount will ₹57600 grow to in 2 years at 15% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹47000 at 20% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹28000 at 15% per year for 2 years (in ₹)?
16. 16.A town has 25300 people. The population grows by 10% every year. What will the population be after 2 years?
17. 17.Find the compound interest on ₹14100 at 5% per year for 1 year, compounded every year (in ₹).
18. 18.Find the compound interest on ₹8100 at 25% per year for 1 year, compounded every year (in ₹).
19. 19.A town has 16000 people. The population grows by 25% every year. What will the population be after 3 years?
20. 20.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
21. 21.What amount will ₹2200 grow to in 1 year at 25% per year compound interest (in ₹)?
22. 22.A town has 25000 people. The population grows by 10% every year. What will the population be after 3 years?
23. 23.What amount will ₹36800 grow to in 3 years at 25% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹17600 at 15% per year for 2 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹11500 at 10% per year for 1 year, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹60000 at 20% per year for 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹47800 at 20% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹15000 at 8% per year for 2 years, compounded every year (in ₹).
29. 29.A scooter is worth ₹34500. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
30. 30.Find the compound interest on ₹29900 at 8% per year for 1 year, compounded every year (in ₹).
31. 31.Find the compound interest on ₹45200 at 15% per year for 2 years, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹47500 at 4% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹45200 at 25% per year for 2 years (in ₹)?
34. 34.A town has 33100 people. The population grows by 12% every year. What will the population be after 1 year?
35. 35.Find the compound interest on ₹37000 at 20% per year for 3 years, compounded every year (in ₹).
36. 36.Find the compound interest on ₹35000 at 4% per year for 2 years, compounded every year (in ₹).
37. 37.What amount will ₹13600 grow to in 2 years at 15% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹15000 at 12% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹19400 at 4% per year for 1 year, compounded every year (in ₹).
40. 40.Find the compound interest on ₹34200 at 20% per year for 2 years, compounded every year (in ₹).

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