Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 284 · 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 ₹24000. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
2. 2.What amount will ₹42500 grow to in 2 years at 4% per year compound interest (in ₹)?
3. 3.What amount will ₹17500 grow to in 2 years at 4% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹12400 at 15% per year for 2 years, compounded every year (in ₹).
5. 5.A town has 18800 people. The population grows by 15% every year. What will the population be after 2 years?
6. 6.What is the difference between the compound interest and the simple interest on ₹30400 at 15% per year for 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹27500 at 8% per year for 2 years (in ₹)?
8. 8.Find the compound interest on ₹51000 at 20% per year for 3 years, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹26100 at 10% per year for 2 years (in ₹)?
10. 10.What amount will ₹19400 grow to in 1 year at 5% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹37000 at 10% per year for 3 years, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹7500 at 4% per year for 2 years (in ₹)?
13. 13.A town has 15000 people. The population grows by 8% every year. What will the population be after 2 years?
14. 14.Find the compound interest on ₹22500 at 8% per year for 2 years, compounded every year (in ₹).
15. 15.What amount will ₹17300 grow to in 1 year at 20% per year compound interest (in ₹)?
16. 16.What amount will ₹32200 grow to in 1 year at 20% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹37600 at 5% per year for 2 years, compounded every year (in ₹).
18. 18.What amount will ₹24300 grow to in 2 years at 20% per year compound interest (in ₹)?
19. 19.A scooter is worth ₹56000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
20. 20.What amount will ₹25600 grow to in 3 years at 25% per year compound interest (in ₹)?
21. 21.A scooter is worth ₹43000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹5000 at 12% per year for 2 years (in ₹)?
23. 23.A scooter is worth ₹34000. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
24. 24.A town has 35800 people. The population grows by 20% every year. What will the population be after 1 year?
25. 25.A town has 7400 people. The population grows by 20% every year. What will the population be after 2 years?
26. 26.A town has 57100 people. The population grows by 20% every year. What will the population be after 1 year?
27. 27.What amount will ₹19100 grow to in 1 year at 12% per year compound interest (in ₹)?
28. 28.Find the compound interest on ₹11800 at 20% per year for 2 years, compounded every year (in ₹).
29. 29.A scooter is worth ₹55200. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
30. 30.Find the compound interest on ₹13100 at 4% per year for 1 year, compounded every year (in ₹).
31. 31.What amount will ₹41600 grow to in 3 years at 25% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹6200 at 10% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹27000 at 12% per year for 1 year, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹23400 at 10% per year for 2 years (in ₹)?
35. 35.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹12500 at 12% per year for 2 years (in ₹)?
37. 37.A scooter is worth ₹50500. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
38. 38.Find the compound interest on ₹37200 at 5% per year for 1 year, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹20400 at 20% per year for 2 years (in ₹)?
40. 40.What amount will ₹25700 grow to in 2 years at 10% per year compound interest (in ₹)?

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