Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 613 · 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 ₹35000 grow to in 2 years at 4% per year compound interest (in ₹)?
2. 2.Find the compound interest on ₹19300 at 8% per year for 1 year, compounded every year (in ₹).
3. 3.What amount will ₹48300 grow to in 1 year at 4% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹12800 at 25% per year for 3 years, compounded every year (in ₹).
5. 5.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
6. 6.A scooter is worth ₹5700. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
7. 7.What amount will ₹30800 grow to in 2 years at 5% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹40200 at 25% per year for 1 year, compounded every year (in ₹).
9. 9.What amount will ₹18200 grow to in 2 years at 20% per year compound interest (in ₹)?
10. 10.What amount will ₹10500 grow to in 1 year at 25% per year compound interest (in ₹)?
11. 11.What amount will ₹38400 grow to in 2 years at 25% per year compound interest (in ₹)?
12. 12.What amount will ₹8000 grow to in 3 years at 10% per year compound interest (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹46700 at 10% per year for 2 years (in ₹)?
14. 14.A town has 54400 people. The population grows by 5% every year. What will the population be after 2 years?
15. 15.What is the difference between the compound interest and the simple interest on ₹6400 at 5% per year for 2 years (in ₹)?
16. 16.A town has 27900 people. The population grows by 25% every year. What will the population be after 1 year?
17. 17.Find the compound interest on ₹37500 at 12% per year for 2 years, compounded every year (in ₹).
18. 18.Find the compound interest on ₹3300 at 10% per year for 1 year, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹41500 at 10% per year for 2 years (in ₹)?
20. 20.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
21. 21.What amount will ₹22200 grow to in 1 year at 10% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
23. 23.What amount will ₹42100 grow to in 1 year at 12% per year compound interest (in ₹)?
24. 24.What amount will ₹3000 grow to in 3 years at 10% per year compound interest (in ₹)?
25. 25.What amount will ₹40600 grow to in 1 year at 5% per year compound interest (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹42700 at 20% per year for 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹30000 at 12% per year for 2 years (in ₹)?
28. 28.What amount will ₹22400 grow to in 3 years at 25% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹14500 at 10% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹4800 at 25% per year for 3 years, compounded every year (in ₹).
31. 31.Find the compound interest on ₹11700 at 4% per year for 1 year, compounded every year (in ₹).
32. 32.A scooter is worth ₹11200. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
33. 33.Find the compound interest on ₹23500 at 20% per year for 2 years, compounded every year (in ₹).
34. 34.A scooter is worth ₹8400. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
35. 35.Find the compound interest on ₹24000 at 20% per year for 1 year, compounded every year (in ₹).
36. 36.A town has 55400 people. The population grows by 10% every year. What will the population be after 2 years?
37. 37.Find the compound interest on ₹42400 at 5% per year for 2 years, compounded every year (in ₹).
38. 38.Find the compound interest on ₹23500 at 25% per year for 1 year, compounded every year (in ₹).
39. 39.A scooter is worth ₹40800. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹46800 at 5% per year for 2 years (in ₹)?

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