Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 265 · 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 ₹15600 at 4% per year for 1 year, compounded every year (in ₹).
2. 2.What amount will ₹34400 grow to in 2 years at 20% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹34200 at 12% per year for 1 year, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹6400 at 15% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹47800 at 15% per year for 1 year, compounded every year (in ₹).
6. 6.Find the compound interest on ₹4200 at 4% per year for 1 year, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹47500 at 4% per year for 2 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹24800 at 10% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹37600 at 4% per year for 1 year, compounded every year (in ₹).
10. 10.What is the difference between the compound interest and the simple interest on ₹37200 at 5% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹19800 at 4% per year for 1 year, compounded every year (in ₹).
12. 12.What amount will ₹7500 grow to in 1 year at 20% per year compound interest (in ₹)?
13. 13.What amount will ₹43000 grow to in 3 years at 10% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹54800 at 5% per year for 2 years, compounded every year (in ₹).
15. 15.What amount will ₹2500 grow to in 2 years at 4% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹37500 at 8% per year for 2 years, compounded every year (in ₹).
17. 17.Find the compound interest on ₹57000 at 20% per year for 3 years, compounded every year (in ₹).
18. 18.Find the compound interest on ₹48500 at 20% per year for 3 years, compounded every year (in ₹).
19. 19.Find the compound interest on ₹6800 at 25% per year for 2 years, compounded every year (in ₹).
20. 20.A scooter is worth ₹40000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
21. 21.Find the compound interest on ₹28100 at 10% per year for 1 year, compounded every year (in ₹).
22. 22.What amount will ₹24000 grow to in 3 years at 15% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹10400 at 15% per year for 2 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹35400 at 15% per year for 1 year, compounded every year (in ₹).
25. 25.A scooter is worth ₹13300. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
26. 26.A scooter is worth ₹56000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹25000 at 12% per year for 2 years (in ₹)?
28. 28.What amount will ₹17200 grow to in 2 years at 5% per year compound interest (in ₹)?
29. 29.What amount will ₹10000 grow to in 2 years at 8% per year compound interest (in ₹)?
30. 30.A scooter is worth ₹13900. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
31. 31.Find the compound interest on ₹39000 at 10% per year for 3 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹45300 at 10% per year for 2 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹42500 at 8% per year for 2 years, compounded every year (in ₹).
34. 34.What amount will ₹54300 grow to in 1 year at 4% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹37700 at 15% per year for 1 year, compounded every year (in ₹).
36. 36.What amount will ₹2000 grow to in 2 years at 20% per year compound interest (in ₹)?
37. 37.A town has 20100 people. The population grows by 15% every year. What will the population be after 1 year?
38. 38.What amount will ₹37000 grow to in 1 year at 20% per year compound interest (in ₹)?
39. 39.A town has 39200 people. The population grows by 25% every year. What will the population be after 2 years?
40. 40.What amount will ₹48000 grow to in 3 years at 15% per year compound interest (in ₹)?

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