Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 410 · 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 ₹10000 at 8% per year for 1 year, compounded every year (in ₹).
2. 2.What amount will ₹25200 grow to in 2 years at 15% per year compound interest (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹47500 at 8% per year for 2 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹60000 at 8% per year for 2 years (in ₹)?
5. 5.What amount will ₹38500 grow to in 3 years at 20% per year compound interest (in ₹)?
6. 6.A town has 10200 people. The population grows by 25% every year. What will the population be after 1 year?
7. 7.A scooter is worth ₹10200. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹47200 at 5% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹47900 at 10% per year for 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹35200 at 15% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹41600 at 25% per year for 3 years, compounded every year (in ₹).
12. 12.Find the compound interest on ₹40900 at 5% per year for 1 year, compounded every year (in ₹).
13. 13.What amount will ₹12400 grow to in 1 year at 5% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹6200 at 5% per year for 1 year, compounded every year (in ₹).
15. 15.A town has 4300 people. The population grows by 20% every year. What will the population be after 2 years?
16. 16.What amount will ₹23300 grow to in 2 years at 10% per year compound interest (in ₹)?
17. 17.A town has 57500 people. The population grows by 12% every year. What will the population be after 2 years?
18. 18.What is the difference between the compound interest and the simple interest on ₹55600 at 5% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹5000 at 4% per year for 2 years (in ₹)?
20. 20.What amount will ₹39000 grow to in 3 years at 10% per year compound interest (in ₹)?
21. 21.What amount will ₹58000 grow to in 2 years at 5% per year compound interest (in ₹)?
22. 22.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?
24. 24.What amount will ₹53000 grow to in 1 year at 5% per year compound interest (in ₹)?
25. 25.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹52500 at 4% per year for 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹22500 at 12% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹12500 at 20% per year for 2 years, compounded every year (in ₹).
29. 29.What amount will ₹51900 grow to in 2 years at 10% per year compound interest (in ₹)?
30. 30.A town has 8800 people. The population grows by 25% every year. What will the population be after 2 years?
31. 31.Find the compound interest on ₹22000 at 25% per year for 1 year, compounded every year (in ₹).
32. 32.Find the compound interest on ₹49200 at 25% per year for 1 year, compounded every year (in ₹).
33. 33.A scooter is worth ₹23700. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
34. 34.Find the compound interest on ₹30400 at 25% per year for 3 years, compounded every year (in ₹).
35. 35.A town has 8000 people. The population grows by 25% every year. What will the population be after 3 years?
36. 36.What is the difference between the compound interest and the simple interest on ₹57500 at 8% per year for 2 years (in ₹)?
37. 37.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
38. 38.What amount will ₹22900 grow to in 1 year at 20% per year compound interest (in ₹)?
39. 39.What amount will ₹40000 grow to in 3 years at 20% per year compound interest (in ₹)?
40. 40.A scooter is worth ₹5000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?

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