Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 572 · 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 ₹36900 grow to in 1 year at 4% per year compound interest (in ₹)?
2. 2.A town has 32000 people. The population grows by 5% every year. What will the population be after 2 years?
3. 3.Find the compound interest on ₹7500 at 8% per year for 2 years, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹38800 at 15% per year for 2 years (in ₹)?
5. 5.What amount will ₹50000 grow to in 2 years at 8% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹36100 at 8% per year for 1 year, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹3300 at 20% per year for 2 years (in ₹)?
8. 8.A scooter is worth ₹15200. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
9. 9.What amount will ₹25600 grow to in 3 years at 25% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹6700 at 10% per year for 1 year, compounded every year (in ₹).
11. 11.What amount will ₹38800 grow to in 1 year at 4% per year compound interest (in ₹)?
12. 12.A town has 40000 people. The population grows by 15% every year. What will the population be after 3 years?
13. 13.Find the compound interest on ₹42000 at 10% per year for 3 years, compounded every year (in ₹).
14. 14.A town has 19700 people. The population grows by 8% every year. What will the population be after 1 year?
15. 15.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹7000 at 20% per year for 1 year, compounded every year (in ₹).
17. 17.Find the compound interest on ₹52300 at 10% per year for 2 years, compounded every year (in ₹).
18. 18.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
19. 19.What amount will ₹2500 grow to in 1 year at 12% per year compound interest (in ₹)?
20. 20.Find the compound interest on ₹12500 at 4% per year for 2 years, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹32500 at 8% per year for 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹42500 at 4% per year for 2 years (in ₹)?
23. 23.What amount will ₹14000 grow to in 3 years at 20% per year compound interest (in ₹)?
24. 24.What amount will ₹14400 grow to in 2 years at 5% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹7500 at 8% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹15000 at 20% per year for 3 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹40000 at 4% per year for 2 years (in ₹)?
28. 28.A scooter is worth ₹52800. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
29. 29.Find the compound interest on ₹9400 at 4% per year for 1 year, compounded every year (in ₹).
30. 30.What amount will ₹23700 grow to in 2 years at 10% per year compound interest (in ₹)?
31. 31.What amount will ₹5500 grow to in 2 years at 20% per year compound interest (in ₹)?
32. 32.What amount will ₹2000 grow to in 3 years at 10% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹40100 at 20% per year for 2 years (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹47500 at 10% per year for 2 years (in ₹)?
35. 35.What amount will ₹56100 grow to in 1 year at 8% per year compound interest (in ₹)?
36. 36.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
37. 37.What amount will ₹30000 grow to in 2 years at 4% per year compound interest (in ₹)?
38. 38.A scooter is worth ₹13700. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
39. 39.A scooter is worth ₹18500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
40. 40.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?

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