Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 799 · 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 ₹27700 grow to in 1 year at 8% per year compound interest (in ₹)?
2. 2.What amount will ₹53600 grow to in 2 years at 20% per year compound interest (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹5000 at 20% per year for 3 years, compounded every year (in ₹).
5. 5.Find the compound interest on ₹25600 at 15% per year for 2 years, compounded every year (in ₹).
6. 6.What is the difference between the compound interest and the simple interest on ₹43600 at 15% per year for 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹33600 at 5% per year for 2 years (in ₹)?
8. 8.What amount will ₹5400 grow to in 1 year at 20% per year compound interest (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹6000 at 25% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹22800 at 15% per year for 2 years, compounded every year (in ₹).
11. 11.What amount will ₹2500 grow to in 2 years at 8% per year compound interest (in ₹)?
12. 12.A town has 8200 people. The population grows by 4% every year. What will the population be after 1 year?
13. 13.What is the difference between the compound interest and the simple interest on ₹31200 at 10% per year for 2 years (in ₹)?
14. 14.What amount will ₹14600 grow to in 1 year at 4% per year compound interest (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹7600 at 25% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹3700 at 15% per year for 1 year, compounded every year (in ₹).
17. 17.What amount will ₹31200 grow to in 1 year at 4% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹20800 at 25% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹35400 at 5% per year for 1 year, compounded every year (in ₹).
20. 20.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
21. 21.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
22. 22.What amount will ₹32500 grow to in 2 years at 12% per year compound interest (in ₹)?
23. 23.A town has 30000 people. The population grows by 10% every year. What will the population be after 3 years?
24. 24.Find the compound interest on ₹25000 at 8% per year for 2 years, compounded every year (in ₹).
25. 25.A scooter is worth ₹7500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
26. 26.What amount will ₹27500 grow to in 2 years at 4% per year compound interest (in ₹)?
27. 27.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
28. 28.What amount will ₹25700 grow to in 1 year at 8% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹37600 at 15% per year for 2 years (in ₹)?
30. 30.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
31. 31.What amount will ₹20300 grow to in 1 year at 12% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹7500 at 12% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹37500 at 12% per year for 2 years (in ₹)?
34. 34.What amount will ₹9500 grow to in 3 years at 20% per year compound interest (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹45000 at 8% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹27600 at 25% per year for 2 years (in ₹)?
37. 37.What amount will ₹22000 grow to in 2 years at 5% per year compound interest (in ₹)?
38. 38.A town has 19400 people. The population grows by 10% every year. What will the population be after 2 years?
39. 39.What amount will ₹21700 grow to in 1 year at 15% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹30000 at 8% per year for 2 years, compounded every year (in ₹).

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