Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 526 · 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 ₹8800 grow to in 1 year at 25% per year compound interest (in ₹)?
2. 2.A scooter is worth ₹27700. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
3. 3.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
4. 4.Find the compound interest on ₹21900 at 10% per year for 2 years, compounded every year (in ₹).
5. 5.What amount will ₹24000 grow to in 3 years at 15% per year compound interest (in ₹)?
6. 6.What amount will ₹23800 grow to in 2 years at 10% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹33600 at 25% per year for 3 years, compounded every year (in ₹).
8. 8.What amount will ₹47100 grow to in 1 year at 5% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹57100 at 12% per year for 1 year, compounded every year (in ₹).
10. 10.What amount will ₹36800 grow to in 2 years at 15% per year compound interest (in ₹)?
11. 11.A town has 2900 people. The population grows by 20% every year. What will the population be after 2 years?
12. 12.What is the difference between the compound interest and the simple interest on ₹30000 at 4% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹6900 at 20% per year for 1 year, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹2000 at 25% per year for 2 years (in ₹)?
15. 15.A town has 28000 people. The population grows by 10% every year. What will the population be after 3 years?
16. 16.What amount will ₹32600 grow to in 1 year at 12% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹4000 at 20% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹14100 at 8% per year for 1 year, compounded every year (in ₹).
19. 19.What amount will ₹14600 grow to in 1 year at 12% per year compound interest (in ₹)?
20. 20.A scooter is worth ₹40000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹6000 at 20% per year for 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹12100 at 20% per year for 2 years (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹37600 at 15% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹3400 at 25% per year for 1 year, compounded every year (in ₹).
25. 25.Find the compound interest on ₹59000 at 10% per year for 3 years, compounded every year (in ₹).
26. 26.What amount will ₹22900 grow to in 2 years at 10% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹35300 at 20% per year for 2 years, compounded every year (in ₹).
28. 28.What amount will ₹23200 grow to in 2 years at 5% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹37300 at 20% per year for 2 years (in ₹)?
30. 30.What amount will ₹12800 grow to in 2 years at 5% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹32500 at 12% per year for 2 years, compounded every year (in ₹).
32. 32.What amount will ₹15000 grow to in 2 years at 12% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?
34. 34.A town has 51000 people. The population grows by 10% every year. What will the population be after 3 years?
35. 35.A town has 8600 people. The population grows by 8% every year. What will the population be after 1 year?
36. 36.A scooter is worth ₹7100. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
37. 37.Find the compound interest on ₹24000 at 25% per year for 3 years, compounded every year (in ₹).
38. 38.A town has 16400 people. The population grows by 5% every year. What will the population be after 1 year?
39. 39.What amount will ₹32600 grow to in 2 years at 10% per year compound interest (in ₹)?
40. 40.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?

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