Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 739 · 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 ₹25000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹24000 at 5% per year for 2 years (in ₹)?
3. 3.What amount will ₹3600 grow to in 2 years at 5% per year compound interest (in ₹)?
4. 4.A town has 57400 people. The population grows by 5% every year. What will the population be after 1 year?
5. 5.What amount will ₹21100 grow to in 1 year at 20% per year compound interest (in ₹)?
6. 6.A town has 25700 people. The population grows by 4% every year. What will the population be after 1 year?
7. 7.A town has 35200 people. The population grows by 25% every year. What will the population be after 3 years?
8. 8.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
9. 9.A town has 38000 people. The population grows by 10% every year. What will the population be after 3 years?
10. 10.What is the difference between the compound interest and the simple interest on ₹39600 at 15% per year for 2 years (in ₹)?
11. 11.A town has 33700 people. The population grows by 5% every year. What will the population be after 1 year?
12. 12.Find the compound interest on ₹55200 at 12% per year for 1 year, compounded every year (in ₹).
13. 13.Find the compound interest on ₹32500 at 12% per year for 2 years, compounded every year (in ₹).
14. 14.Find the compound interest on ₹12300 at 4% per year for 1 year, compounded every year (in ₹).
15. 15.A scooter is worth ₹6600. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
16. 16.What amount will ₹17200 grow to in 1 year at 4% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹10400 at 25% per year for 2 years (in ₹)?
18. 18.What amount will ₹51000 grow to in 1 year at 12% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹37200 at 15% per year for 2 years (in ₹)?
20. 20.A scooter is worth ₹41000. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
21. 21.Find the compound interest on ₹56000 at 5% per year for 2 years, compounded every year (in ₹).
22. 22.Find the compound interest on ₹24000 at 15% per year for 3 years, compounded every year (in ₹).
23. 23.What amount will ₹29200 grow to in 1 year at 4% per year compound interest (in ₹)?
24. 24.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
25. 25.Find the compound interest on ₹19400 at 10% per year for 2 years, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹50400 at 25% per year for 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹58900 at 20% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹47500 at 4% per year for 2 years, compounded every year (in ₹).
29. 29.What amount will ₹25700 grow to in 1 year at 12% per year compound interest (in ₹)?
30. 30.A scooter is worth ₹24000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
31. 31.Find the compound interest on ₹2400 at 15% per year for 2 years, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹44800 at 15% per year for 2 years (in ₹)?
34. 34.Find the compound interest on ₹47400 at 10% per year for 1 year, compounded every year (in ₹).
35. 35.What amount will ₹59600 grow to in 2 years at 5% per year compound interest (in ₹)?
36. 36.Find the compound interest on ₹37600 at 15% per year for 2 years, compounded every year (in ₹).
37. 37.What amount will ₹8000 grow to in 2 years at 15% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹21000 at 20% per year for 3 years, compounded every year (in ₹).
39. 39.A scooter is worth ₹44800. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
40. 40.Find the compound interest on ₹9100 at 20% per year for 1 year, compounded every year (in ₹).

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