Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 880 · 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 ₹56000. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
2. 2.A town has 42800 people. The population grows by 8% every year. What will the population be after 1 year?
3. 3.What is the difference between the compound interest and the simple interest on ₹16400 at 25% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹26500 at 10% per year for 1 year, compounded every year (in ₹).
5. 5.Find the compound interest on ₹22600 at 5% per year for 1 year, compounded every year (in ₹).
6. 6.What amount will ₹34100 grow to in 1 year at 20% per year compound interest (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹10800 at 25% per year for 2 years (in ₹)?
8. 8.A scooter is worth ₹4500. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
9. 9.Find the compound interest on ₹15600 at 25% per year for 2 years, compounded every year (in ₹).
10. 10.What is the difference between the compound interest and the simple interest on ₹32500 at 4% per year for 2 years (in ₹)?
11. 11.A town has 21500 people. The population grows by 8% every year. What will the population be after 1 year?
12. 12.What is the difference between the compound interest and the simple interest on ₹45200 at 15% per year for 2 years (in ₹)?
13. 13.What amount will ₹27800 grow to in 1 year at 15% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹33600 at 15% per year for 2 years (in ₹)?
15. 15.A town has 27300 people. The population grows by 10% every year. What will the population be after 2 years?
16. 16.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?
17. 17.Find the compound interest on ₹7500 at 10% per year for 2 years, compounded every year (in ₹).
18. 18.Find the compound interest on ₹32200 at 25% per year for 1 year, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹50000 at 4% per year for 2 years (in ₹)?
20. 20.A scooter is worth ₹50300. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
21. 21.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
22. 22.What is the difference between the compound interest and the simple interest on ₹56900 at 10% per year for 2 years (in ₹)?
23. 23.Find the compound interest on ₹15400 at 15% per year for 1 year, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹12400 at 5% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹2600 at 20% per year for 2 years (in ₹)?
26. 26.A town has 16000 people. The population grows by 10% every year. What will the population be after 3 years?
27. 27.What is the difference between the compound interest and the simple interest on ₹60000 at 8% per year for 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹50000 at 15% per year for 2 years (in ₹)?
29. 29.What amount will ₹24000 grow to in 3 years at 10% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹44000 at 5% per year for 2 years, compounded every year (in ₹).
31. 31.Find the compound interest on ₹59200 at 20% per year for 2 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹37600 at 5% per year for 2 years, compounded every year (in ₹).
33. 33.A scooter is worth ₹33600. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
34. 34.What amount will ₹32000 grow to in 2 years at 25% per year compound interest (in ₹)?
35. 35.What amount will ₹47500 grow to in 2 years at 8% per year compound interest (in ₹)?
36. 36.What amount will ₹24800 grow to in 2 years at 15% per year compound interest (in ₹)?
37. 37.A scooter is worth ₹45800. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
38. 38.Find the compound interest on ₹4500 at 5% per year for 1 year, compounded every year (in ₹).
39. 39.Find the compound interest on ₹17600 at 15% per year for 2 years, compounded every year (in ₹).
40. 40.Find the compound interest on ₹52500 at 12% per year for 2 years, compounded every year (in ₹).

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