Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 451 · 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 ₹51200. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
2. 2.What amount will ₹12500 grow to in 2 years at 12% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹46700 at 12% per year for 1 year, compounded every year (in ₹).
4. 4.What amount will ₹30000 grow to in 2 years at 8% per year compound interest (in ₹)?
5. 5.What amount will ₹36000 grow to in 3 years at 10% per year compound interest (in ₹)?
6. 6.What amount will ₹41500 grow to in 1 year at 5% per year compound interest (in ₹)?
7. 7.What amount will ₹25300 grow to in 1 year at 25% per year compound interest (in ₹)?
8. 8.What amount will ₹19600 grow to in 2 years at 15% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹28300 at 20% per year for 1 year, compounded every year (in ₹).
10. 10.What is the difference between the compound interest and the simple interest on ₹23600 at 25% per year for 2 years (in ₹)?
11. 11.A scooter is worth ₹4400. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
12. 12.A scooter is worth ₹59200. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
13. 13.Find the compound interest on ₹18600 at 5% per year for 1 year, compounded every year (in ₹).
14. 14.Find the compound interest on ₹7000 at 5% per year for 1 year, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹42500 at 8% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹40800 at 10% per year for 2 years (in ₹)?
17. 17.A scooter is worth ₹26700. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
18. 18.What amount will ₹4700 grow to in 1 year at 4% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹57500 at 8% per year for 2 years (in ₹)?
20. 20.A town has 15100 people. The population grows by 5% every year. What will the population be after 1 year?
21. 21.A scooter is worth ₹36600. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹46100 at 10% per year for 2 years (in ₹)?
23. 23.What amount will ₹35000 grow to in 1 year at 5% per year compound interest (in ₹)?
24. 24.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹37600 at 15% per year for 2 years (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹32500 at 4% per year for 2 years (in ₹)?
27. 27.A town has 15000 people. The population grows by 10% every year. What will the population be after 3 years?
28. 28.What amount will ₹55100 grow to in 1 year at 20% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹60000 at 15% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
31. 31.A scooter is worth ₹24500. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
32. 32.What amount will ₹22400 grow to in 2 years at 5% per year compound interest (in ₹)?
33. 33.What amount will ₹12800 grow to in 2 years at 5% per year compound interest (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹42500 at 12% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹7200 at 25% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹47500 at 4% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹43000 at 12% per year for 1 year, compounded every year (in ₹).
38. 38.What amount will ₹17500 grow to in 1 year at 5% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹9100 at 15% per year for 1 year, compounded every year (in ₹).
40. 40.What amount will ₹12600 grow to in 1 year at 12% per year compound interest (in ₹)?

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