Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 241 · 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.Find the compound interest on ₹28400 at 5% per year for 2 years, compounded every year (in ₹).
2. 2.Find the compound interest on ₹11300 at 5% per year for 1 year, compounded every year (in ₹).
3. 3.Find the compound interest on ₹48400 at 15% per year for 2 years, compounded every year (in ₹).
4. 4.Find the compound interest on ₹4800 at 5% per year for 2 years, compounded every year (in ₹).
5. 5.What amount will ₹41600 grow to in 2 years at 15% per year compound interest (in ₹)?
6. 6.What amount will ₹5000 grow to in 2 years at 12% per year compound interest (in ₹)?
7. 7.What amount will ₹42400 grow to in 2 years at 20% per year compound interest (in ₹)?
8. 8.A scooter is worth ₹20000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
9. 9.A town has 53000 people. The population grows by 10% every year. What will the population be after 3 years?
10. 10.What amount will ₹44800 grow to in 2 years at 25% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹41000 at 20% per year for 3 years, compounded every year (in ₹).
12. 12.Find the compound interest on ₹16800 at 25% per year for 2 years, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹14800 at 5% per year for 2 years (in ₹)?
14. 14.Find the compound interest on ₹23400 at 20% per year for 1 year, compounded every year (in ₹).
15. 15.Find the compound interest on ₹5200 at 15% per year for 2 years, compounded every year (in ₹).
16. 16.Find the compound interest on ₹7500 at 4% per year for 2 years, compounded every year (in ₹).
17. 17.What amount will ₹57500 grow to in 2 years at 12% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹14400 at 10% per year for 2 years (in ₹)?
19. 19.A town has 16000 people. The population grows by 5% every year. What will the population be after 3 years?
20. 20.A scooter is worth ₹44400. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
21. 21.Find the compound interest on ₹18800 at 5% per year for 2 years, compounded every year (in ₹).
22. 22.What is the difference between the compound interest and the simple interest on ₹20000 at 8% per year for 2 years (in ₹)?
23. 23.Find the compound interest on ₹42800 at 10% per year for 1 year, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹47600 at 5% per year for 2 years (in ₹)?
25. 25.What amount will ₹8200 grow to in 2 years at 10% per year compound interest (in ₹)?
26. 26.A scooter is worth ₹47600. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹11600 at 25% per year for 2 years (in ₹)?
28. 28.A scooter is worth ₹53800. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
29. 29.A town has 37500 people. The population grows by 12% every year. What will the population be after 2 years?
30. 30.Find the compound interest on ₹39600 at 25% per year for 2 years, compounded every year (in ₹).
31. 31.A scooter is worth ₹11000. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
32. 32.A town has 22600 people. The population grows by 12% every year. What will the population be after 1 year?
33. 33.Find the compound interest on ₹31200 at 5% per year for 2 years, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹20800 at 20% per year for 2 years (in ₹)?
35. 35.What amount will ₹57200 grow to in 2 years at 5% per year compound interest (in ₹)?
36. 36.A scooter is worth ₹23100. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹28800 at 15% per year for 2 years (in ₹)?
38. 38.A scooter is worth ₹10400. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
39. 39.A scooter is worth ₹2500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
40. 40.A town has 55000 people. The population grows by 20% every year. What will the population be after 3 years?

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