Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 708 · 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 ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
2. 2.A town has 35000 people. The population grows by 8% every year. What will the population be after 2 years?
3. 3.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
4. 4.A town has 6800 people. The population grows by 25% every year. What will the population be after 2 years?
5. 5.What is the difference between the compound interest and the simple interest on ₹36900 at 20% per year for 2 years (in ₹)?
6. 6.What amount will ₹9300 grow to in 1 year at 5% per year compound interest (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹7500 at 4% per year for 2 years (in ₹)?
8. 8.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹48000 at 25% per year for 3 years, compounded every year (in ₹).
10. 10.What is the difference between the compound interest and the simple interest on ₹14800 at 5% per year for 2 years (in ₹)?
11. 11.A town has 23600 people. The population grows by 5% every year. What will the population be after 2 years?
12. 12.What amount will ₹55000 grow to in 1 year at 10% per year compound interest (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹37500 at 12% per year for 2 years (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹6000 at 5% per year for 2 years (in ₹)?
15. 15.What amount will ₹42600 grow to in 1 year at 12% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹56000 at 25% per year for 2 years (in ₹)?
17. 17.What amount will ₹53600 grow to in 1 year at 4% per year compound interest (in ₹)?
18. 18.A scooter is worth ₹25500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
19. 19.Find the compound interest on ₹13000 at 20% per year for 1 year, compounded every year (in ₹).
20. 20.A town has 11300 people. The population grows by 5% every year. What will the population be after 1 year?
21. 21.What is the difference between the compound interest and the simple interest on ₹13600 at 25% per year for 2 years (in ₹)?
22. 22.What amount will ₹45800 grow to in 1 year at 10% per year compound interest (in ₹)?
23. 23.What amount will ₹25600 grow to in 3 years at 25% per year compound interest (in ₹)?
24. 24.A scooter is worth ₹27500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
25. 25.A town has 2400 people. The population grows by 20% every year. What will the population be after 2 years?
26. 26.Find the compound interest on ₹42400 at 20% per year for 2 years, compounded every year (in ₹).
27. 27.A scooter is worth ₹11600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
28. 28.Find the compound interest on ₹5000 at 10% per year for 3 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
30. 30.Find the compound interest on ₹46400 at 25% per year for 3 years, compounded every year (in ₹).
31. 31.What amount will ₹52800 grow to in 2 years at 25% per year compound interest (in ₹)?
32. 32.A town has 53200 people. The population grows by 20% every year. What will the population be after 2 years?
33. 33.Find the compound interest on ₹3200 at 25% per year for 3 years, compounded every year (in ₹).
34. 34.Find the compound interest on ₹43800 at 20% per year for 1 year, compounded every year (in ₹).
35. 35.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
36. 36.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
37. 37.What amount will ₹18600 grow to in 1 year at 5% per year compound interest (in ₹)?
38. 38.What amount will ₹24600 grow to in 1 year at 25% per year compound interest (in ₹)?
39. 39.A town has 35300 people. The population grows by 10% every year. What will the population be after 1 year?
40. 40.A town has 8900 people. The population grows by 5% every year. What will the population be after 1 year?

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