Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 622 · 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 ₹32000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
2. 2.A town has 51300 people. The population grows by 4% every year. What will the population be after 1 year?
3. 3.Find the compound interest on ₹40000 at 4% per year for 2 years, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹40000 at 5% per year for 2 years (in ₹)?
5. 5.What amount will ₹17500 grow to in 2 years at 8% per year compound interest (in ₹)?
6. 6.What amount will ₹49600 grow to in 1 year at 12% per year compound interest (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹54200 at 20% per year for 2 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹19300 at 10% per year for 2 years (in ₹)?
9. 9.What amount will ₹40400 grow to in 2 years at 10% per year compound interest (in ₹)?
10. 10.What amount will ₹50000 grow to in 2 years at 5% per year compound interest (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹42000 at 15% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹24200 at 20% per year for 2 years, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹36400 at 15% per year for 2 years (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹44700 at 20% per year for 2 years (in ₹)?
15. 15.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
16. 16.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹31100 at 10% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹46800 at 5% per year for 1 year, compounded every year (in ₹).
19. 19.Find the compound interest on ₹35800 at 12% per year for 1 year, compounded every year (in ₹).
20. 20.What is the difference between the compound interest and the simple interest on ₹5000 at 8% per year for 2 years (in ₹)?
21. 21.What amount will ₹56000 grow to in 3 years at 25% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹53000 at 10% per year for 3 years, compounded every year (in ₹).
23. 23.Find the compound interest on ₹42500 at 8% per year for 2 years, compounded every year (in ₹).
24. 24.A town has 54100 people. The population grows by 10% every year. What will the population be after 2 years?
25. 25.What is the difference between the compound interest and the simple interest on ₹32000 at 25% per year for 2 years (in ₹)?
26. 26.A town has 53800 people. The population grows by 15% every year. What will the population be after 1 year?
27. 27.What amount will ₹2300 grow to in 1 year at 10% per year compound interest (in ₹)?
28. 28.What amount will ₹34500 grow to in 2 years at 20% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹43200 at 5% per year for 2 years, compounded every year (in ₹).
30. 30.What is the difference between the compound interest and the simple interest on ₹32500 at 8% per year for 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹55600 at 25% per year for 2 years (in ₹)?
32. 32.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹15000 at 20% per year for 3 years, compounded every year (in ₹).
34. 34.What amount will ₹59000 grow to in 3 years at 20% per year compound interest (in ₹)?
35. 35.A town has 2000 people. The population grows by 25% every year. What will the population be after 2 years?
36. 36.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹54000 at 5% per year for 2 years (in ₹)?
38. 38.A town has 23200 people. The population grows by 25% every year. What will the population be after 2 years?
39. 39.Find the compound interest on ₹36300 at 25% per year for 1 year, compounded every year (in ₹).
40. 40.Find the compound interest on ₹44400 at 20% per year for 1 year, compounded every year (in ₹).

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