Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 519 · 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 2 years at 5% per year compound interest (in ₹)?
2. 2.Find the compound interest on ₹17400 at 5% per year for 1 year, compounded every year (in ₹).
3. 3.What amount will ₹6200 grow to in 1 year at 4% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹2300 at 12% per year for 1 year, compounded every year (in ₹).
5. 5.Find the compound interest on ₹22400 at 25% per year for 3 years, compounded every year (in ₹).
6. 6.A scooter is worth ₹50000. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
7. 7.A town has 37500 people. The population grows by 12% every year. What will the population be after 2 years?
8. 8.A town has 20000 people. The population grows by 12% every year. What will the population be after 2 years?
9. 9.A town has 56000 people. The population grows by 5% every year. What will the population be after 3 years?
10. 10.What is the difference between the compound interest and the simple interest on ₹48800 at 15% per year for 2 years (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹20800 at 25% per year for 2 years (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹53300 at 10% per year for 2 years (in ₹)?
13. 13.A scooter is worth ₹4600. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
14. 14.Find the compound interest on ₹19200 at 25% per year for 3 years, compounded every year (in ₹).
15. 15.A town has 42500 people. The population grows by 20% every year. What will the population be after 3 years?
16. 16.What amount will ₹10800 grow to in 2 years at 10% per year compound interest (in ₹)?
17. 17.A scooter is worth ₹48000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹47500 at 8% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹57500 at 4% per year for 2 years, compounded every year (in ₹).
20. 20.Find the compound interest on ₹11200 at 5% per year for 1 year, compounded every year (in ₹).
21. 21.What amount will ₹2100 grow to in 2 years at 10% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹26800 at 5% per year for 2 years, compounded every year (in ₹).
23. 23.A scooter is worth ₹52100. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹60000 at 8% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹7200 at 20% per year for 2 years (in ₹)?
26. 26.A scooter is worth ₹36500. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹50000 at 15% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹27700 at 10% per year for 1 year, compounded every year (in ₹).
29. 29.What amount will ₹51900 grow to in 1 year at 4% per year compound interest (in ₹)?
30. 30.What amount will ₹10000 grow to in 2 years at 12% per year compound interest (in ₹)?
31. 31.What amount will ₹36000 grow to in 3 years at 20% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹8800 at 25% per year for 2 years (in ₹)?
33. 33.A scooter is worth ₹32000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
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.What is the difference between the compound interest and the simple interest on ₹42500 at 8% per year for 2 years (in ₹)?
36. 36.A scooter is worth ₹8000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹36000 at 20% per year for 2 years (in ₹)?
38. 38.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
39. 39.A scooter is worth ₹15000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹50700 at 10% per year for 2 years (in ₹)?

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