Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 422 · 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 ₹52800 at 25% per year for 2 years, compounded every year (in ₹).
2. 2.What amount will ₹35000 grow to in 1 year at 25% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹26000 at 10% per year for 2 years, compounded every year (in ₹).
4. 4.A scooter is worth ₹31700. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
5. 5.A town has 11200 people. The population grows by 25% every year. What will the population be after 3 years?
6. 6.A scooter is worth ₹48000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
7. 7.What amount will ₹20500 grow to in 1 year at 15% per year compound interest (in ₹)?
8. 8.What amount will ₹29600 grow to in 2 years at 5% per year compound interest (in ₹)?
9. 9.A scooter is worth ₹2500. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
10. 10.Find the compound interest on ₹5000 at 12% per year for 2 years, compounded every year (in ₹).
11. 11.Find the compound interest on ₹31700 at 25% per year for 1 year, compounded every year (in ₹).
12. 12.A scooter is worth ₹8000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
13. 13.What amount will ₹24000 grow to in 3 years at 15% per year compound interest (in ₹)?
14. 14.A scooter is worth ₹20000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
15. 15.Find the compound interest on ₹14900 at 12% per year for 1 year, compounded every year (in ₹).
16. 16.A scooter is worth ₹10000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
17. 17.A town has 4000 people. The population grows by 10% every year. What will the population be after 3 years?
18. 18.What is the difference between the compound interest and the simple interest on ₹35700 at 10% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹30000 at 10% per year for 1 year, compounded every year (in ₹).
20. 20.Find the compound interest on ₹15000 at 4% per year for 2 years, compounded every year (in ₹).
21. 21.A town has 14000 people. The population grows by 10% every year. What will the population be after 3 years?
22. 22.What is the difference between the compound interest and the simple interest on ₹54400 at 5% per year for 2 years (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹18800 at 5% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹4800 at 5% per year for 2 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹3200 at 15% per year for 2 years, compounded every year (in ₹).
26. 26.What amount will ₹56900 grow to in 2 years at 10% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹58700 at 10% per year for 2 years, compounded every year (in ₹).
28. 28.What amount will ₹30300 grow to in 2 years at 20% per year compound interest (in ₹)?
29. 29.A scooter is worth ₹46500. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹20000 at 10% per year for 2 years (in ₹)?
31. 31.What amount will ₹6100 grow to in 2 years at 10% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹11300 at 10% per year for 2 years, compounded every year (in ₹).
33. 33.What is the difference between the compound interest and the simple interest on ₹14400 at 5% per year for 2 years (in ₹)?
34. 34.A scooter is worth ₹56000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹36800 at 25% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹23100 at 25% per year for 1 year, compounded every year (in ₹).
37. 37.What amount will ₹42500 grow to in 1 year at 8% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹32400 at 5% per year for 2 years, compounded every year (in ₹).
39. 39.Find the compound interest on ₹5600 at 5% per year for 2 years, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹25600 at 5% per year for 2 years (in ₹)?

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