Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 334 · 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 ₹51400 grow to in 2 years at 20% per year compound interest (in ₹)?
2. 2.What amount will ₹6200 grow to in 2 years at 10% per year compound interest (in ₹)?
3. 3.A town has 55500 people. The population grows by 20% every year. What will the population be after 3 years?
4. 4.Find the compound interest on ₹19800 at 20% per year for 1 year, compounded every year (in ₹).
5. 5.What amount will ₹3600 grow to in 2 years at 15% per year compound interest (in ₹)?
6. 6.What amount will ₹32500 grow to in 2 years at 4% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹2000 at 15% per year for 2 years, compounded every year (in ₹).
8. 8.Find the compound interest on ₹3200 at 15% per year for 2 years, compounded every year (in ₹).
9. 9.Find the compound interest on ₹31400 at 4% per year for 1 year, compounded every year (in ₹).
10. 10.What amount will ₹20000 grow to in 2 years at 4% per year compound interest (in ₹)?
11. 11.A scooter is worth ₹28600. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
12. 12.A town has 4300 people. The population grows by 15% every year. What will the population be after 1 year?
13. 13.What is the difference between the compound interest and the simple interest on ₹28800 at 5% per year for 2 years (in ₹)?
14. 14.What amount will ₹14400 grow to in 2 years at 20% per year compound interest (in ₹)?
15. 15.A town has 32000 people. The population grows by 15% every year. What will the population be after 3 years?
16. 16.Find the compound interest on ₹11200 at 20% per year for 1 year, compounded every year (in ₹).
17. 17.Find the compound interest on ₹15000 at 12% per year for 2 years, compounded every year (in ₹).
18. 18.What amount will ₹30000 grow to in 3 years at 10% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹2500 at 12% per year for 1 year, compounded every year (in ₹).
20. 20.What amount will ₹9000 grow to in 1 year at 10% per year compound interest (in ₹)?
21. 21.A scooter is worth ₹30200. Its value falls by 20% 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 ₹25200 at 25% per year for 2 years (in ₹)?
23. 23.A scooter is worth ₹56000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
24. 24.Find the compound interest on ₹58400 at 5% per year for 1 year, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹18800 at 10% per year for 2 years (in ₹)?
26. 26.A scooter is worth ₹56300. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
27. 27.A town has 44700 people. The population grows by 12% every year. What will the population be after 1 year?
28. 28.What is the difference between the compound interest and the simple interest on ₹5000 at 12% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹23300 at 20% per year for 2 years, compounded every year (in ₹).
30. 30.Find the compound interest on ₹7500 at 4% per year for 2 years, compounded every year (in ₹).
31. 31.Find the compound interest on ₹10300 at 10% per year for 1 year, compounded every year (in ₹).
32. 32.What amount will ₹8200 grow to in 1 year at 8% per year compound interest (in ₹)?
33. 33.A scooter is worth ₹57500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
34. 34.Find the compound interest on ₹46400 at 25% per year for 3 years, compounded every year (in ₹).
35. 35.Find the compound interest on ₹16300 at 20% per year for 2 years, compounded every year (in ₹).
36. 36.A scooter is worth ₹44400. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹34000 at 10% per year for 2 years (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹35500 at 20% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹55000 at 8% per year for 2 years, compounded every year (in ₹).
40. 40.Find the compound interest on ₹17100 at 5% per year for 1 year, compounded every year (in ₹).

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