Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 229 · 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 ₹16000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
2. 2.What amount will ₹45000 grow to in 3 years at 10% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹34800 at 25% per year for 2 years, compounded every year (in ₹).
4. 4.What amount will ₹49500 grow to in 1 year at 4% per year compound interest (in ₹)?
5. 5.A town has 8000 people. The population grows by 5% every year. What will the population be after 1 year?
6. 6.Find the compound interest on ₹55000 at 8% per year for 2 years, compounded every year (in ₹).
7. 7.What amount will ₹8600 grow to in 1 year at 5% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
10. 10.What amount will ₹28200 grow to in 1 year at 12% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹15000 at 4% per year for 2 years, compounded every year (in ₹).
12. 12.A scooter is worth ₹7000. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
13. 13.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹6400 at 5% per year for 2 years, compounded every year (in ₹).
15. 15.What amount will ₹42500 grow to in 2 years at 12% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹8800 at 5% per year for 2 years, compounded every year (in ₹).
17. 17.A town has 37500 people. The population grows by 4% every year. What will the population be after 2 years?
18. 18.What amount will ₹17400 grow to in 1 year at 12% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹4400 at 4% per year for 1 year, compounded every year (in ₹).
20. 20.A scooter is worth ₹51400. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹8700 at 10% per year for 2 years (in ₹)?
22. 22.Find the compound interest on ₹36800 at 25% per year for 3 years, compounded every year (in ₹).
23. 23.What amount will ₹10900 grow to in 1 year at 20% per year compound interest (in ₹)?
24. 24.A scooter is worth ₹37500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
25. 25.Find the compound interest on ₹17600 at 8% per year for 1 year, compounded every year (in ₹).
26. 26.A town has 32800 people. The population grows by 5% every year. What will the population be after 2 years?
27. 27.What amount will ₹56000 grow to in 1 year at 15% per year compound interest (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹47600 at 15% per year for 2 years (in ₹)?
29. 29.What amount will ₹25800 grow to in 2 years at 20% per year compound interest (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹4800 at 20% per year for 2 years (in ₹)?
31. 31.Find the compound interest on ₹12000 at 5% per year for 2 years, compounded every year (in ₹).
32. 32.What amount will ₹48900 grow to in 1 year at 20% per year compound interest (in ₹)?
33. 33.A scooter is worth ₹10600. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹29800 at 20% per year for 2 years (in ₹)?
35. 35.Find the compound interest on ₹33600 at 15% per year for 2 years, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹43200 at 15% per year for 2 years (in ₹)?
37. 37.What amount will ₹36600 grow to in 1 year at 12% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
39. 39.What amount will ₹4200 grow to in 1 year at 10% per year compound interest (in ₹)?
40. 40.A town has 17200 people. The population grows by 25% every year. What will the population be after 2 years?

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