Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 75 · 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 ₹12100. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
2. 2.What amount will ₹13200 grow to in 2 years at 15% per year compound interest (in ₹)?
3. 3.A town has 24000 people. The population grows by 5% every year. What will the population be after 3 years?
4. 4.What is the difference between the compound interest and the simple interest on ₹10400 at 5% per year for 2 years (in ₹)?
5. 5.A scooter is worth ₹40000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
6. 6.A town has 41500 people. The population grows by 5% every year. What will the population be after 1 year?
7. 7.Find the compound interest on ₹20400 at 12% per year for 1 year, compounded every year (in ₹).
8. 8.Find the compound interest on ₹12000 at 10% per year for 3 years, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹60000 at 5% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
11. 11.What is the difference between the compound interest and the simple interest on ₹55500 at 20% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹32000 at 15% per year for 3 years, compounded every year (in ₹).
13. 13.Find the compound interest on ₹41300 at 25% per year for 1 year, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹15000 at 8% per year for 2 years (in ₹)?
15. 15.Find the compound interest on ₹36800 at 25% per year for 3 years, compounded every year (in ₹).
16. 16.What is the difference between the compound interest and the simple interest on ₹8400 at 5% per year for 2 years (in ₹)?
17. 17.Find the compound interest on ₹21600 at 5% per year for 2 years, compounded every year (in ₹).
18. 18.Find the compound interest on ₹28800 at 8% per year for 1 year, compounded every year (in ₹).
19. 19.A town has 50600 people. The population grows by 4% every year. What will the population be after 1 year?
20. 20.What is the difference between the compound interest and the simple interest on ₹42500 at 12% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹41200 at 25% per year for 1 year, compounded every year (in ₹).
22. 22.Find the compound interest on ₹43000 at 10% per year for 3 years, compounded every year (in ₹).
23. 23.What amount will ₹47000 grow to in 3 years at 10% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹7800 at 10% per year for 1 year, compounded every year (in ₹).
25. 25.A scooter is worth ₹45000. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
26. 26.Find the compound interest on ₹8000 at 10% per year for 3 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹25600 at 5% per year for 2 years (in ₹)?
28. 28.What amount will ₹13000 grow to in 1 year at 10% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹17000 at 15% per year for 1 year, compounded every year (in ₹).
30. 30.A town has 2000 people. The population grows by 25% every year. What will the population be after 2 years?
31. 31.What amount will ₹21100 grow to in 1 year at 15% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹54100 at 10% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹7500 at 4% per year for 2 years (in ₹)?
34. 34.What amount will ₹32500 grow to in 2 years at 12% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹12500 at 20% per year for 3 years, compounded every year (in ₹).
36. 36.A scooter is worth ₹49700. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
37. 37.A town has 21500 people. The population grows by 10% every year. What will the population be after 2 years?
38. 38.A scooter is worth ₹2900. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
39. 39.Find the compound interest on ₹26400 at 25% per year for 2 years, compounded every year (in ₹).
40. 40.Find the compound interest on ₹44800 at 25% per year for 2 years, compounded every year (in ₹).

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