Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 820 · 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 ₹16000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
2. 2.What amount will ₹60000 grow to in 2 years at 4% per year compound interest (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹30000 at 4% per year for 2 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹47600 at 25% per year for 2 years (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹45800 at 20% per year for 2 years (in ₹)?
6. 6.A town has 16000 people. The population grows by 15% every year. What will the population be after 3 years?
7. 7.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹10000 at 25% per year for 2 years, compounded every year (in ₹).
9. 9.What amount will ₹16000 grow to in 3 years at 15% per year compound interest (in ₹)?
10. 10.What amount will ₹34800 grow to in 1 year at 25% per year compound interest (in ₹)?
11. 11.A scooter is worth ₹40000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
12. 12.What amount will ₹32500 grow to in 1 year at 5% per year compound interest (in ₹)?
13. 13.A scooter is worth ₹13300. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
14. 14.Find the compound interest on ₹4700 at 20% per year for 1 year, compounded every year (in ₹).
15. 15.Find the compound interest on ₹27500 at 12% per year for 2 years, compounded every year (in ₹).
16. 16.What is the difference between the compound interest and the simple interest on ₹3500 at 20% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹17600 at 20% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹15000 at 4% per year for 1 year, compounded every year (in ₹).
19. 19.Find the compound interest on ₹20200 at 25% per year for 1 year, compounded every year (in ₹).
20. 20.Find the compound interest on ₹2400 at 15% per year for 2 years, compounded every year (in ₹).
21. 21.A scooter is worth ₹44800. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
22. 22.Find the compound interest on ₹48000 at 10% per year for 3 years, compounded every year (in ₹).
23. 23.What amount will ₹17500 grow to in 2 years at 4% per year compound interest (in ₹)?
24. 24.A scooter is worth ₹51200. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
25. 25.Find the compound interest on ₹45900 at 12% per year for 1 year, compounded every year (in ₹).
26. 26.A town has 16500 people. The population grows by 20% every year. What will the population be after 2 years?
27. 27.Find the compound interest on ₹18500 at 20% per year for 3 years, compounded every year (in ₹).
28. 28.Find the compound interest on ₹16400 at 5% per year for 2 years, compounded every year (in ₹).
29. 29.What amount will ₹12500 grow to in 2 years at 8% per year compound interest (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹35900 at 10% per year for 2 years (in ₹)?
31. 31.What amount will ₹53400 grow to in 1 year at 5% per year compound interest (in ₹)?
32. 32.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹6100 at 10% per year for 2 years, compounded every year (in ₹).
34. 34.Find the compound interest on ₹32600 at 20% per year for 2 years, compounded every year (in ₹).
35. 35.A town has 6700 people. The population grows by 5% every year. What will the population be after 1 year?
36. 36.What is the difference between the compound interest and the simple interest on ₹16400 at 10% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹7700 at 10% per year for 2 years, compounded every year (in ₹).
38. 38.A scooter is worth ₹48000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
39. 39.What amount will ₹40500 grow to in 3 years at 20% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹26800 at 5% per year for 2 years (in ₹)?

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