Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 803 · 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.What amount will ₹34300 grow to in 2 years at 10% per year compound interest (in ₹)?
2. 2.A scooter is worth ₹8000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹42500 at 4% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹32500 at 12% per year for 1 year, compounded every year (in ₹).
5. 5.What is the difference between the compound interest and the simple interest on ₹55800 at 20% per year for 2 years (in ₹)?
6. 6.Find the compound interest on ₹19700 at 20% per year for 2 years, compounded every year (in ₹).
7. 7.Find the compound interest on ₹20000 at 12% per year for 2 years, compounded every year (in ₹).
8. 8.Find the compound interest on ₹44300 at 4% per year for 1 year, compounded every year (in ₹).
9. 9.What amount will ₹18000 grow to in 2 years at 15% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹12000 at 5% per year for 2 years, compounded every year (in ₹).
11. 11.What is the difference between the compound interest and the simple interest on ₹45200 at 25% per year for 2 years (in ₹)?
12. 12.What amount will ₹47800 grow to in 1 year at 15% per year compound interest (in ₹)?
13. 13.A town has 2400 people. The population grows by 20% every year. What will the population be after 1 year?
14. 14.What amount will ₹48500 grow to in 3 years at 20% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹57000 at 10% per year for 2 years, compounded every year (in ₹).
16. 16.What amount will ₹38800 grow to in 1 year at 25% per year compound interest (in ₹)?
17. 17.What amount will ₹14900 grow to in 2 years at 10% per year compound interest (in ₹)?
18. 18.A town has 9800 people. The population grows by 4% every year. What will the population be after 1 year?
19. 19.Find the compound interest on ₹24000 at 15% per year for 3 years, compounded every year (in ₹).
20. 20.What is the difference between the compound interest and the simple interest on ₹47600 at 15% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹7200 at 20% per year for 2 years, compounded every year (in ₹).
22. 22.What is the difference between the compound interest and the simple interest on ₹60000 at 4% per year for 2 years (in ₹)?
23. 23.What amount will ₹41600 grow to in 3 years at 25% per year compound interest (in ₹)?
24. 24.A scooter is worth ₹44500. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
25. 25.What amount will ₹48000 grow to in 2 years at 25% per year compound interest (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹37500 at 4% per year for 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹34200 at 10% per year for 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹35600 at 5% per year for 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹41800 at 10% per year for 2 years (in ₹)?
30. 30.What amount will ₹18000 grow to in 3 years at 20% per year compound interest (in ₹)?
31. 31.A scooter is worth ₹53000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
32. 32.A town has 12700 people. The population grows by 10% every year. What will the population be after 2 years?
33. 33.What is the difference between the compound interest and the simple interest on ₹42500 at 8% per year for 2 years (in ₹)?
34. 34.Find the compound interest on ₹28900 at 20% per year for 2 years, compounded every year (in ₹).
35. 35.Find the compound interest on ₹43200 at 25% per year for 1 year, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹58800 at 25% per year for 2 years (in ₹)?
37. 37.What amount will ₹4800 grow to in 2 years at 15% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹4500 at 4% per year for 1 year, compounded every year (in ₹).
39. 39.A town has 8700 people. The population grows by 10% every year. What will the population be after 1 year?
40. 40.Find the compound interest on ₹32700 at 10% per year for 1 year, compounded every year (in ₹).

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