Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 844 · 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 is the difference between the compound interest and the simple interest on ₹12400 at 10% per year for 2 years (in ₹)?
2. 2.Find the compound interest on ₹6400 at 10% per year for 2 years, compounded every year (in ₹).
3. 3.What is the difference between the compound interest and the simple interest on ₹47500 at 12% per year for 2 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹22500 at 12% per year for 2 years (in ₹)?
5. 5.What amount will ₹56500 grow to in 3 years at 20% per year compound interest (in ₹)?
6. 6.What amount will ₹8000 grow to in 3 years at 10% per year compound interest (in ₹)?
7. 7.What amount will ₹3200 grow to in 2 years at 5% per year compound interest (in ₹)?
8. 8.What amount will ₹48000 grow to in 3 years at 15% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹42800 at 15% per year for 2 years, compounded every year (in ₹).
10. 10.Find the compound interest on ₹36400 at 25% per year for 2 years, compounded every year (in ₹).
11. 11.Find the compound interest on ₹11500 at 8% per year for 1 year, compounded every year (in ₹).
12. 12.What amount will ₹46400 grow to in 2 years at 15% per year compound interest (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹25300 at 10% per year for 2 years (in ₹)?
14. 14.Find the compound interest on ₹20300 at 20% per year for 2 years, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹9100 at 10% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹56800 at 5% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹10000 at 5% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹53000 at 10% per year for 3 years, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹23900 at 20% per year for 2 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹14000 at 5% per year for 2 years (in ₹)?
21. 21.A scooter is worth ₹14800. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
22. 22.A town has 60000 people. The population grows by 12% every year. What will the population be after 2 years?
23. 23.Find the compound interest on ₹43100 at 10% per year for 2 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹56000 at 15% per year for 3 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹17500 at 4% per year for 2 years, compounded every year (in ₹).
26. 26.What amount will ₹10500 grow to in 1 year at 15% per year compound interest (in ₹)?
27. 27.A scooter is worth ₹57600. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
28. 28.A town has 10100 people. The population grows by 20% every year. What will the population be after 1 year?
29. 29.What amount will ₹34000 grow to in 3 years at 10% per year compound interest (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹32000 at 5% per year for 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹14400 at 5% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹27500 at 8% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹21200 at 25% per year for 2 years, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹52500 at 12% per year for 2 years (in ₹)?
35. 35.A town has 2600 people. The population grows by 20% every year. What will the population be after 2 years?
36. 36.What is the difference between the compound interest and the simple interest on ₹8000 at 15% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹27200 at 25% per year for 2 years, compounded every year (in ₹).
38. 38.What amount will ₹2900 grow to in 1 year at 12% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹32300 at 5% per year for 1 year, compounded every year (in ₹).
40. 40.What amount will ₹49600 grow to in 2 years at 20% per year compound interest (in ₹)?

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