Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 575 · 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 ₹5200. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹5000 at 4% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹30000 at 10% per year for 3 years, compounded every year (in ₹).
4. 4.Find the compound interest on ₹45900 at 20% per year for 2 years, compounded every year (in ₹).
5. 5.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
6. 6.What is the difference between the compound interest and the simple interest on ₹20000 at 8% per year for 2 years (in ₹)?
7. 7.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹5000 at 12% per year for 2 years (in ₹)?
9. 9.A town has 39000 people. The population grows by 20% every year. What will the population be after 3 years?
10. 10.What is the difference between the compound interest and the simple interest on ₹17500 at 12% per year for 2 years (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹20800 at 5% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹12400 at 5% per year for 2 years, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹48000 at 25% per year for 2 years (in ₹)?
14. 14.Find the compound interest on ₹20000 at 25% per year for 1 year, compounded every year (in ₹).
15. 15.A town has 40600 people. The population grows by 25% every year. What will the population be after 1 year?
16. 16.What is the difference between the compound interest and the simple interest on ₹45000 at 8% per year for 2 years (in ₹)?
17. 17.Find the compound interest on ₹9000 at 10% per year for 3 years, compounded every year (in ₹).
18. 18.Find the compound interest on ₹20600 at 8% per year for 1 year, compounded every year (in ₹).
19. 19.A scooter is worth ₹24000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
20. 20.What amount will ₹7800 grow to in 1 year at 5% per year compound interest (in ₹)?
21. 21.A scooter is worth ₹27500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
22. 22.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹7500 at 8% per year for 2 years, compounded every year (in ₹).
24. 24.A town has 17500 people. The population grows by 12% every year. What will the population be after 2 years?
25. 25.Find the compound interest on ₹17500 at 4% per year for 2 years, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹23800 at 20% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
28. 28.Find the compound interest on ₹39500 at 20% per year for 2 years, compounded every year (in ₹).
29. 29.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹42500 at 8% per year for 2 years (in ₹)?
31. 31.What amount will ₹17800 grow to in 1 year at 25% per year compound interest (in ₹)?
32. 32.What amount will ₹35200 grow to in 3 years at 25% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹58000 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 ₹27500 at 8% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹52800 at 10% per year for 2 years (in ₹)?
36. 36.What amount will ₹58300 grow to in 2 years at 10% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹47800 at 10% per year for 1 year, compounded every year (in ₹).
38. 38.Find the compound interest on ₹5000 at 4% per year for 2 years, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹4200 at 10% per year for 2 years (in ₹)?
40. 40.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?

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