Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 82 · 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 ₹13100. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
2. 2.Find the compound interest on ₹50100 at 15% per year for 1 year, compounded every year (in ₹).
3. 3.Find the compound interest on ₹39400 at 12% per year for 1 year, compounded every year (in ₹).
4. 4.Find the compound interest on ₹16400 at 5% per year for 2 years, compounded every year (in ₹).
5. 5.What amount will ₹4400 grow to in 1 year at 12% per year compound interest (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹9200 at 15% per year for 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹45600 at 10% per year for 2 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹37800 at 20% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹36900 at 5% per year for 1 year, compounded every year (in ₹).
10. 10.What amount will ₹10500 grow to in 1 year at 15% per year compound interest (in ₹)?
11. 11.A town has 45800 people. The population grows by 10% every year. What will the population be after 2 years?
12. 12.Find the compound interest on ₹10400 at 25% per year for 2 years, compounded every year (in ₹).
13. 13.Find the compound interest on ₹13100 at 20% per year for 1 year, compounded every year (in ₹).
14. 14.What amount will ₹10000 grow to in 2 years at 8% per year compound interest (in ₹)?
15. 15.A scooter is worth ₹36800. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
16. 16.Find the compound interest on ₹29600 at 5% per year for 2 years, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹60000 at 8% per year for 2 years (in ₹)?
18. 18.A scooter is worth ₹4900. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
19. 19.A scooter is worth ₹7500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
20. 20.Find the compound interest on ₹4000 at 10% per year for 1 year, compounded every year (in ₹).
21. 21.Find the compound interest on ₹12500 at 8% per year for 2 years, compounded every year (in ₹).
22. 22.Find the compound interest on ₹52200 at 5% per year for 1 year, compounded every year (in ₹).
23. 23.A scooter is worth ₹11600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
24. 24.A town has 48000 people. The population grows by 20% every year. What will the population be after 3 years?
25. 25.What is the difference between the compound interest and the simple interest on ₹32500 at 8% per year for 2 years (in ₹)?
26. 26.What amount will ₹58200 grow to in 2 years at 20% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹15000 at 8% per year for 2 years, compounded every year (in ₹).
28. 28.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
29. 29.What amount will ₹30400 grow to in 2 years at 10% per year compound interest (in ₹)?
30. 30.A scooter is worth ₹1600. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
31. 31.What amount will ₹10800 grow to in 1 year at 8% per year compound interest (in ₹)?
32. 32.What amount will ₹47200 grow to in 2 years at 5% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹56900 at 10% per year for 1 year, compounded every year (in ₹).
34. 34.What amount will ₹40000 grow to in 3 years at 25% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹17300 at 8% per year for 1 year, compounded every year (in ₹).
36. 36.Find the compound interest on ₹35200 at 25% per year for 3 years, compounded every year (in ₹).
37. 37.What amount will ₹54800 grow to in 2 years at 15% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹33600 at 5% per year for 2 years (in ₹)?
39. 39.What amount will ₹9700 grow to in 1 year at 8% per year compound interest (in ₹)?
40. 40.A scooter is worth ₹35200. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?

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