Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 655 · 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 ₹7500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹60000 at 4% per year for 2 years (in ₹)?
3. 3.A scooter is worth ₹58500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
4. 4.A town has 49400 people. The population grows by 10% every year. What will the population be after 1 year?
5. 5.Find the compound interest on ₹56500 at 4% per year for 1 year, compounded every year (in ₹).
6. 6.Find the compound interest on ₹34500 at 20% per year for 3 years, compounded every year (in ₹).
7. 7.Find the compound interest on ₹38600 at 10% per year for 1 year, compounded every year (in ₹).
8. 8.What amount will ₹12000 grow to in 2 years at 15% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹37900 at 12% per year for 1 year, compounded every year (in ₹).
10. 10.Find the compound interest on ₹47500 at 20% per year for 1 year, compounded every year (in ₹).
11. 11.A town has 32000 people. The population grows by 25% every year. What will the population be after 3 years?
12. 12.Find the compound interest on ₹16800 at 5% per year for 2 years, compounded every year (in ₹).
13. 13.What amount will ₹21500 grow to in 1 year at 12% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹45000 at 8% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹41600 at 25% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹47300 at 20% per year for 2 years, compounded every year (in ₹).
17. 17.What amount will ₹25000 grow to in 2 years at 12% per year compound interest (in ₹)?
18. 18.A town has 26100 people. The population grows by 8% every year. What will the population be after 1 year?
19. 19.What is the difference between the compound interest and the simple interest on ₹33600 at 25% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹3200 at 5% per year for 2 years, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹57500 at 8% per year for 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹20800 at 25% per year for 2 years (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹49900 at 10% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹13400 at 12% per year for 1 year, compounded every year (in ₹).
25. 25.Find the compound interest on ₹41600 at 25% per year for 3 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹2000 at 15% per year for 2 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹57500 at 12% per year for 2 years (in ₹)?
28. 28.What amount will ₹6400 grow to in 2 years at 15% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹30400 at 25% per year for 3 years, compounded every year (in ₹).
30. 30.What amount will ₹37500 grow to in 2 years at 4% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹2300 at 20% per year for 2 years (in ₹)?
32. 32.What amount will ₹48000 grow to in 3 years at 15% per year compound interest (in ₹)?
33. 33.A town has 9600 people. The population grows by 15% every year. What will the population be after 2 years?
34. 34.What amount will ₹47400 grow to in 1 year at 4% per year compound interest (in ₹)?
35. 35.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹5600 at 15% per year for 2 years (in ₹)?
37. 37.A scooter is worth ₹12500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹5000 at 8% per year for 2 years (in ₹)?
39. 39.What amount will ₹35100 grow to in 1 year at 5% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹16300 at 5% per year for 1 year, compounded every year (in ₹).

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