Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 565 · 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 ₹10000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
2. 2.Find the compound interest on ₹53000 at 20% per year for 3 years, compounded every year (in ₹).
3. 3.Find the compound interest on ₹8000 at 25% per year for 2 years, compounded every year (in ₹).
4. 4.What amount will ₹27300 grow to in 1 year at 5% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹4500 at 10% per year for 2 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹23100 at 20% per year for 2 years (in ₹)?
7. 7.What amount will ₹20400 grow to in 2 years at 25% per year compound interest (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹15000 at 8% per year for 2 years (in ₹)?
9. 9.What amount will ₹9700 grow to in 1 year at 15% per year compound interest (in ₹)?
10. 10.What amount will ₹35000 grow to in 3 years at 10% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹41100 at 12% per year for 1 year, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹10500 at 20% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹41600 at 15% per year for 2 years, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹41900 at 10% per year for 2 years (in ₹)?
15. 15.Find the compound interest on ₹56700 at 10% per year for 1 year, compounded every year (in ₹).
16. 16.Find the compound interest on ₹12500 at 12% per year for 2 years, compounded every year (in ₹).
17. 17.Find the compound interest on ₹43600 at 10% per year for 1 year, compounded every year (in ₹).
18. 18.A town has 18500 people. The population grows by 20% every year. What will the population be after 3 years?
19. 19.A town has 30400 people. The population grows by 4% every year. What will the population be after 1 year?
20. 20.A scooter is worth ₹57100. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
21. 21.A town has 41400 people. The population grows by 4% every year. What will the population be after 1 year?
22. 22.Find the compound interest on ₹11900 at 25% per year for 1 year, compounded every year (in ₹).
23. 23.What amount will ₹9900 grow to in 1 year at 25% per year compound interest (in ₹)?
24. 24.A town has 30000 people. The population grows by 12% every year. What will the population be after 2 years?
25. 25.Find the compound interest on ₹40400 at 12% per year for 1 year, compounded every year (in ₹).
26. 26.Find the compound interest on ₹4400 at 15% per year for 2 years, compounded every year (in ₹).
27. 27.What amount will ₹4800 grow to in 1 year at 20% per year compound interest (in ₹)?
28. 28.Find the compound interest on ₹8300 at 20% per year for 1 year, compounded every year (in ₹).
29. 29.Find the compound interest on ₹25000 at 8% per year for 2 years, compounded every year (in ₹).
30. 30.Find the compound interest on ₹9600 at 5% per year for 1 year, compounded every year (in ₹).
31. 31.What amount will ₹42500 grow to in 2 years at 12% per year compound interest (in ₹)?
32. 32.A town has 38000 people. The population grows by 4% every year. What will the population be after 1 year?
33. 33.Find the compound interest on ₹5000 at 10% per year for 3 years, compounded every year (in ₹).
34. 34.What amount will ₹2500 grow to in 2 years at 4% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹31700 at 10% per year for 1 year, compounded every year (in ₹).
36. 36.What amount will ₹46700 grow to in 1 year at 10% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹53800 at 25% per year for 1 year, compounded every year (in ₹).
38. 38.Find the compound interest on ₹36700 at 10% per year for 2 years, compounded every year (in ₹).
39. 39.What amount will ₹18600 grow to in 1 year at 4% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹8400 at 5% per year for 2 years, compounded every year (in ₹).

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