Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 792 · 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 ₹40600 at 4% per year for 1 year, compounded every year (in ₹).
2. 2.Find the compound interest on ₹12500 at 20% per year for 2 years, compounded every year (in ₹).
3. 3.Find the compound interest on ₹10000 at 12% per year for 2 years, compounded every year (in ₹).
4. 4.What amount will ₹22500 grow to in 1 year at 10% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹15000 at 8% per year for 2 years (in ₹)?
6. 6.Find the compound interest on ₹11300 at 5% per year for 1 year, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹35300 at 20% per year for 2 years (in ₹)?
8. 8.Find the compound interest on ₹15500 at 15% per year for 1 year, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹56800 at 5% per year for 2 years (in ₹)?
10. 10.A town has 22600 people. The population grows by 25% every year. What will the population be after 1 year?
11. 11.What amount will ₹38000 grow to in 1 year at 8% per year compound interest (in ₹)?
12. 12.Find the compound interest on ₹23400 at 20% per year for 1 year, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹22400 at 20% per year for 2 years (in ₹)?
14. 14.A town has 35700 people. The population grows by 8% every year. What will the population be after 1 year?
15. 15.What amount will ₹34900 grow to in 1 year at 25% per year compound interest (in ₹)?
16. 16.A town has 30600 people. The population grows by 4% every year. What will the population be after 1 year?
17. 17.A town has 56000 people. The population grows by 25% every year. What will the population be after 2 years?
18. 18.A scooter is worth ₹5400. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
19. 19.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
20. 20.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
21. 21.A town has 3400 people. The population grows by 10% every year. What will the population be after 1 year?
22. 22.Find the compound interest on ₹16000 at 25% per year for 3 years, compounded every year (in ₹).
23. 23.What amount will ₹9400 grow to in 1 year at 15% per year compound interest (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹18100 at 10% per year for 2 years (in ₹)?
25. 25.Find the compound interest on ₹42900 at 5% per year for 1 year, compounded every year (in ₹).
26. 26.Find the compound interest on ₹19700 at 25% per year for 1 year, compounded every year (in ₹).
27. 27.A scooter is worth ₹10900. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
28. 28.A town has 56100 people. The population grows by 4% every year. What will the population be after 1 year?
29. 29.What amount will ₹48000 grow to in 3 years at 20% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹35500 at 20% per year for 3 years, compounded every year (in ₹).
31. 31.What amount will ₹54600 grow to in 1 year at 5% per year compound interest (in ₹)?
32. 32.What amount will ₹53000 grow to in 3 years at 10% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹3200 at 25% per year for 3 years, compounded every year (in ₹).
34. 34.A scooter is worth ₹44000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
35. 35.Find the compound interest on ₹28100 at 4% per year for 1 year, compounded every year (in ₹).
36. 36.A town has 56000 people. The population grows by 25% every year. What will the population be after 3 years?
37. 37.What amount will ₹49900 grow to in 2 years at 10% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹39500 at 12% per year for 1 year, compounded every year (in ₹).
39. 39.Find the compound interest on ₹16900 at 20% per year for 1 year, compounded every year (in ₹).
40. 40.What amount will ₹34200 grow to in 1 year at 12% per year compound interest (in ₹)?

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