Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 382 · 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 ₹21200 grow to in 1 year at 4% per year compound interest (in ₹)?
2. 2.What amount will ₹7500 grow to in 2 years at 4% per year compound interest (in ₹)?
3. 3.A town has 8000 people. The population grows by 25% every year. What will the population be after 3 years?
4. 4.Find the compound interest on ₹11200 at 25% per year for 3 years, compounded every year (in ₹).
5. 5.What is the difference between the compound interest and the simple interest on ₹22500 at 4% per year for 2 years (in ₹)?
6. 6.A town has 16000 people. The population grows by 5% every year. What will the population be after 3 years?
7. 7.Find the compound interest on ₹37200 at 5% per year for 2 years, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹46400 at 5% per year for 2 years (in ₹)?
9. 9.A scooter is worth ₹32000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
10. 10.A town has 7500 people. The population grows by 8% every year. What will the population be after 2 years?
11. 11.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
12. 12.Find the compound interest on ₹22600 at 20% per year for 2 years, compounded every year (in ₹).
13. 13.What amount will ₹44600 grow to in 1 year at 10% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹54400 at 15% per year for 2 years (in ₹)?
15. 15.A town has 3800 people. The population grows by 12% every year. What will the population be after 1 year?
16. 16.A scooter is worth ₹32000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
17. 17.A town has 31700 people. The population grows by 5% every year. What will the population be after 1 year?
18. 18.What amount will ₹14000 grow to in 1 year at 20% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹45600 at 5% per year for 2 years, compounded every year (in ₹).
20. 20.What is the difference between the compound interest and the simple interest on ₹59600 at 15% per year for 2 years (in ₹)?
21. 21.What amount will ₹32500 grow to in 2 years at 12% per year compound interest (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹50000 at 8% per year for 2 years (in ₹)?
23. 23.Find the compound interest on ₹26000 at 20% per year for 3 years, compounded every year (in ₹).
24. 24.A town has 32000 people. The population grows by 15% every year. What will the population be after 3 years?
25. 25.What amount will ₹5000 grow to in 2 years at 12% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
27. 27.Find the compound interest on ₹29600 at 5% per year for 2 years, compounded every year (in ₹).
28. 28.What is the difference between the compound interest and the simple interest on ₹9200 at 5% per year for 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹39200 at 15% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹37600 at 5% per year for 2 years, compounded every year (in ₹).
31. 31.Find the compound interest on ₹33700 at 8% per year for 1 year, compounded every year (in ₹).
32. 32.Find the compound interest on ₹54000 at 10% per year for 3 years, compounded every year (in ₹).
33. 33.A town has 50000 people. The population grows by 8% every year. What will the population be after 2 years?
34. 34.What is the difference between the compound interest and the simple interest on ₹59600 at 5% per year for 2 years (in ₹)?
35. 35.A scooter is worth ₹43300. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
36. 36.Find the compound interest on ₹39200 at 5% per year for 2 years, compounded every year (in ₹).
37. 37.Find the compound interest on ₹46500 at 5% per year for 1 year, compounded every year (in ₹).
38. 38.A scooter is worth ₹52500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
39. 39.Find the compound interest on ₹30000 at 5% per year for 1 year, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹5000 at 8% per year for 2 years (in ₹)?

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