Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 886 · 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.A scooter is worth ₹48600. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
2. 2.Find the compound interest on ₹32500 at 4% per year for 2 years, compounded every year (in ₹).
3. 3.A town has 49600 people. The population grows by 15% every year. What will the population be after 2 years?
4. 4.Find the compound interest on ₹10000 at 10% per year for 3 years, compounded every year (in ₹).
5. 5.Find the compound interest on ₹50700 at 10% per year for 2 years, compounded every year (in ₹).
6. 6.A town has 37500 people. The population grows by 8% every year. What will the population be after 2 years?
7. 7.Find the compound interest on ₹8000 at 20% per year for 3 years, compounded every year (in ₹).
8. 8.Find the compound interest on ₹57500 at 20% per year for 1 year, compounded every year (in ₹).
9. 9.Find the compound interest on ₹11900 at 4% per year for 1 year, compounded every year (in ₹).
10. 10.Find the compound interest on ₹11600 at 25% per year for 2 years, compounded every year (in ₹).
11. 11.Find the compound interest on ₹11300 at 12% per year for 1 year, compounded every year (in ₹).
12. 12.Find the compound interest on ₹12800 at 15% per year for 1 year, compounded every year (in ₹).
13. 13.Find the compound interest on ₹47300 at 25% per year for 1 year, compounded every year (in ₹).
14. 14.What amount will ₹7500 grow to in 2 years at 4% per year compound interest (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹25000 at 12% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹3600 at 25% per year for 2 years (in ₹)?
18. 18.A scooter is worth ₹1600. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
19. 19.Find the compound interest on ₹11000 at 5% per year for 1 year, compounded every year (in ₹).
20. 20.What amount will ₹54100 grow to in 2 years at 10% per year compound interest (in ₹)?
21. 21.What amount will ₹15200 grow to in 1 year at 20% per year compound interest (in ₹)?
22. 22.A scooter is worth ₹32000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
23. 23.What amount will ₹30400 grow to in 2 years at 5% per year compound interest (in ₹)?
24. 24.What amount will ₹12300 grow to in 2 years at 10% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹23600 at 15% per year for 2 years (in ₹)?
26. 26.A scooter is worth ₹22800. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
27. 27.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
28. 28.A scooter is worth ₹40000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
29. 29.Find the compound interest on ₹48600 at 20% per year for 2 years, compounded every year (in ₹).
30. 30.What is the difference between the compound interest and the simple interest on ₹19600 at 5% per year for 2 years (in ₹)?
31. 31.What amount will ₹8300 grow to in 1 year at 10% per year compound interest (in ₹)?
32. 32.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
33. 33.What amount will ₹52600 grow to in 1 year at 5% per year compound interest (in ₹)?
34. 34.What amount will ₹3700 grow to in 2 years at 20% per year compound interest (in ₹)?
35. 35.What amount will ₹34500 grow to in 3 years at 20% per year compound interest (in ₹)?
36. 36.A scooter is worth ₹24000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
37. 37.Find the compound interest on ₹26100 at 20% per year for 2 years, compounded every year (in ₹).
38. 38.What is the difference between the compound interest and the simple interest on ₹20800 at 15% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹49000 at 20% per year for 3 years, compounded every year (in ₹).
40. 40.What amount will ₹22800 grow to in 1 year at 25% per year compound interest (in ₹)?

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