Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 966 · 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 ₹56300 grow to in 2 years at 10% per year compound interest (in ₹)?
2. 2.Find the compound interest on ₹5000 at 8% per year for 2 years, compounded every year (in ₹).
3. 3.A town has 47500 people. The population grows by 15% every year. What will the population be after 1 year?
4. 4.Find the compound interest on ₹29600 at 20% per year for 1 year, compounded every year (in ₹).
5. 5.What amount will ₹29900 grow to in 2 years at 20% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹11500 at 10% per year for 2 years, compounded every year (in ₹).
7. 7.What amount will ₹42000 grow to in 2 years at 25% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹45000 at 10% per year for 1 year, compounded every year (in ₹).
9. 9.What amount will ₹45000 grow to in 2 years at 12% per year compound interest (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹37500 at 8% per year for 2 years (in ₹)?
11. 11.A scooter is worth ₹47500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
12. 12.A town has 36100 people. The population grows by 20% every year. What will the population be after 2 years?
13. 13.What amount will ₹48300 grow to in 2 years at 20% per year compound interest (in ₹)?
14. 14.A town has 34000 people. The population grows by 10% every year. What will the population be after 3 years?
15. 15.What amount will ₹46300 grow to in 1 year at 10% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹35000 at 12% per year for 2 years (in ₹)?
17. 17.What amount will ₹18700 grow to in 1 year at 12% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹13700 at 20% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹47500 at 12% per year for 2 years (in ₹)?
20. 20.A town has 26800 people. The population grows by 5% every year. What will the population be after 2 years?
21. 21.Find the compound interest on ₹47700 at 12% per year for 1 year, compounded every year (in ₹).
22. 22.Find the compound interest on ₹48000 at 25% per year for 2 years, compounded every year (in ₹).
23. 23.What amount will ₹14000 grow to in 2 years at 25% per year compound interest (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹17500 at 12% per year for 2 years (in ₹)?
25. 25.What amount will ₹23000 grow to in 3 years at 10% per year compound interest (in ₹)?
26. 26.A town has 6400 people. The population grows by 15% every year. What will the population be after 1 year?
27. 27.A scooter is worth ₹8700. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹6400 at 15% per year for 2 years (in ₹)?
29. 29.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
30. 30.A scooter is worth ₹51600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
31. 31.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
32. 32.A town has 25600 people. The population grows by 25% every year. What will the population be after 2 years?
33. 33.What amount will ₹8200 grow to in 1 year at 5% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹46200 at 5% per year for 1 year, compounded every year (in ₹).
35. 35.Find the compound interest on ₹4800 at 5% per year for 2 years, compounded every year (in ₹).
36. 36.What amount will ₹32200 grow to in 1 year at 8% per year compound interest (in ₹)?
37. 37.What amount will ₹53600 grow to in 1 year at 25% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹21100 at 10% per year for 1 year, compounded every year (in ₹).
39. 39.What amount will ₹59800 grow to in 1 year at 5% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹37700 at 12% per year for 1 year, compounded every year (in ₹).

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