Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 582 · 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.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
2. 2.What amount will ₹9700 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 ₹28800 at 25% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
5. 5.A town has 54800 people. The population grows by 5% every year. What will the population be after 2 years?
6. 6.What amount will ₹7300 grow to in 1 year at 4% per year compound interest (in ₹)?
7. 7.What amount will ₹22000 grow to in 3 years at 20% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹56000 at 15% per year for 3 years, compounded every year (in ₹).
9. 9.A town has 18400 people. The population grows by 15% every year. What will the population be after 1 year?
10. 10.What is the difference between the compound interest and the simple interest on ₹9600 at 25% per year for 2 years (in ₹)?
11. 11.A town has 45000 people. The population grows by 4% every year. What will the population be after 2 years?
12. 12.A town has 6000 people. The population grows by 5% every year. What will the population be after 2 years?
13. 13.What amount will ₹56000 grow to in 3 years at 15% per year compound interest (in ₹)?
14. 14.What amount will ₹2400 grow to in 1 year at 25% per year compound interest (in ₹)?
15. 15.A town has 24000 people. The population grows by 5% every year. What will the population be after 3 years?
16. 16.What is the difference between the compound interest and the simple interest on ₹25000 at 8% per year for 2 years (in ₹)?
17. 17.Find the compound interest on ₹15000 at 20% per year for 3 years, compounded every year (in ₹).
18. 18.What is the difference between the compound interest and the simple interest on ₹20400 at 5% per year for 2 years (in ₹)?
19. 19.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
20. 20.What amount will ₹3000 grow to in 3 years at 20% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹49900 at 10% per year for 2 years, compounded every year (in ₹).
22. 22.What amount will ₹27900 grow to in 2 years at 20% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹44900 at 10% per year for 1 year, compounded every year (in ₹).
24. 24.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹45000 at 8% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹25500 at 4% per year for 1 year, compounded every year (in ₹).
27. 27.What amount will ₹32500 grow to in 2 years at 8% per year compound interest (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹60000 at 20% per year for 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹26800 at 25% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹23100 at 20% per year for 1 year, compounded every year (in ₹).
31. 31.What amount will ₹2800 grow to in 2 years at 5% per year compound interest (in ₹)?
32. 32.A town has 24000 people. The population grows by 10% every year. What will the population be after 3 years?
33. 33.Find the compound interest on ₹40500 at 20% per year for 3 years, compounded every year (in ₹).
34. 34.Find the compound interest on ₹10000 at 4% per year for 2 years, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹51100 at 20% per year for 2 years (in ₹)?
36. 36.What amount will ₹57500 grow to in 2 years at 12% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹22500 at 12% per year for 2 years, compounded every year (in ₹).
38. 38.Find the compound interest on ₹46900 at 12% per year for 1 year, compounded every year (in ₹).
39. 39.A scooter is worth ₹23200. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹35000 at 12% per year for 2 years (in ₹)?

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