Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 59 · 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 ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
2. 2.A town has 35000 people. The population grows by 12% every year. What will the population be after 2 years?
3. 3.Find the compound interest on ₹6900 at 5% per year for 1 year, compounded every year (in ₹).
4. 4.Find the compound interest on ₹11100 at 4% per year for 1 year, compounded every year (in ₹).
5. 5.A town has 11000 people. The population grows by 8% every year. What will the population be after 1 year?
6. 6.Find the compound interest on ₹2500 at 15% per year for 1 year, compounded every year (in ₹).
7. 7.A town has 11200 people. The population grows by 15% every year. What will the population be after 2 years?
8. 8.Find the compound interest on ₹15400 at 5% per year for 1 year, compounded every year (in ₹).
9. 9.A town has 13000 people. The population grows by 20% every year. What will the population be after 1 year?
10. 10.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹47500 at 12% per year for 2 years, compounded every year (in ₹).
12. 12.A scooter is worth ₹57500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
13. 13.Find the compound interest on ₹33000 at 10% per year for 3 years, compounded every year (in ₹).
14. 14.Find the compound interest on ₹16600 at 8% per year for 1 year, compounded every year (in ₹).
15. 15.What amount will ₹2000 grow to in 3 years at 10% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹10400 at 15% per year for 2 years (in ₹)?
17. 17.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
18. 18.A scooter is worth ₹59700. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹57500 at 12% per year for 2 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹36600 at 20% per year for 2 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹15200 at 25% per year for 2 years (in ₹)?
22. 22.What amount will ₹57000 grow to in 1 year at 5% per year compound interest (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹53600 at 25% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹2000 at 15% per year for 2 years, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹45000 at 12% per year for 2 years (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹33900 at 10% per year for 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹54400 at 25% per year for 2 years (in ₹)?
28. 28.What amount will ₹56000 grow to in 3 years at 15% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹10700 at 12% per year for 1 year, compounded every year (in ₹).
30. 30.A town has 54100 people. The population grows by 5% every year. What will the population be after 1 year?
31. 31.A town has 13700 people. The population grows by 12% every year. What will the population be after 1 year?
32. 32.What is the difference between the compound interest and the simple interest on ₹20000 at 12% per year for 2 years (in ₹)?
33. 33.A town has 8000 people. The population grows by 5% every year. What will the population be after 3 years?
34. 34.What is the difference between the compound interest and the simple interest on ₹5000 at 12% per year for 2 years (in ₹)?
35. 35.A town has 47500 people. The population grows by 12% every year. What will the population be after 2 years?
36. 36.Find the compound interest on ₹3400 at 4% per year for 1 year, compounded every year (in ₹).
37. 37.A scooter is worth ₹35000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
38. 38.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
39. 39.Find the compound interest on ₹5000 at 4% per year for 2 years, compounded every year (in ₹).
40. 40.Find the compound interest on ₹29000 at 4% per year for 1 year, compounded every year (in ₹).

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