Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 176 · 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 ₹44500 grow to in 3 years at 20% per year compound interest (in ₹)?
2. 2.What amount will ₹23900 grow to in 2 years at 10% per year compound interest (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹39600 at 5% per year for 2 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹26400 at 5% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹40300 at 8% per year for 1 year, compounded every year (in ₹).
6. 6.A town has 6900 people. The population grows by 20% every year. What will the population be after 2 years?
7. 7.What is the difference between the compound interest and the simple interest on ₹45000 at 8% per year for 2 years (in ₹)?
8. 8.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
9. 9.What amount will ₹30000 grow to in 2 years at 12% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
11. 11.A scooter is worth ₹28300. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
12. 12.Find the compound interest on ₹29500 at 20% per year for 3 years, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹23600 at 5% per year for 2 years (in ₹)?
14. 14.Find the compound interest on ₹45000 at 10% per year for 2 years, compounded every year (in ₹).
15. 15.A scooter is worth ₹12000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
16. 16.A scooter is worth ₹6600. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
17. 17.What amount will ₹40900 grow to in 1 year at 10% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹12500 at 8% per year for 2 years, compounded every year (in ₹).
19. 19.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
20. 20.What amount will ₹35000 grow to in 2 years at 4% per year compound interest (in ₹)?
21. 21.What amount will ₹18000 grow to in 3 years at 10% per year compound interest (in ₹)?
22. 22.A scooter is worth ₹3000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
23. 23.A town has 32000 people. The population grows by 5% every year. What will the population be after 3 years?
24. 24.What amount will ₹49600 grow to in 1 year at 12% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹12600 at 10% per year for 2 years (in ₹)?
26. 26.What amount will ₹55600 grow to in 2 years at 15% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
28. 28.What amount will ₹19100 grow to in 2 years at 10% per year compound interest (in ₹)?
29. 29.What amount will ₹35600 grow to in 2 years at 5% per year compound interest (in ₹)?
30. 30.A scooter is worth ₹39300. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
31. 31.A scooter is worth ₹47200. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹59200 at 20% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹30000 at 15% per year for 2 years (in ₹)?
34. 34.A town has 38800 people. The population grows by 8% every year. What will the population be after 1 year?
35. 35.A scooter is worth ₹8000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
36. 36.What amount will ₹53200 grow to in 2 years at 15% per year compound interest (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹36800 at 15% per year for 2 years (in ₹)?
38. 38.A scooter is worth ₹19200. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
39. 39.Find the compound interest on ₹5000 at 12% per year for 2 years, compounded every year (in ₹).
40. 40.Find the compound interest on ₹41600 at 25% per year for 3 years, compounded every year (in ₹).

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