Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 474 · 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.What is the difference between the compound interest and the simple interest on ₹32500 at 8% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹32300 at 20% per year for 2 years (in ₹)?
3. 3.What amount will ₹48000 grow to in 1 year at 12% per year compound interest (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹46000 at 25% per year for 2 years (in ₹)?
5. 5.What amount will ₹28100 grow to in 2 years at 20% per year compound interest (in ₹)?
6. 6.A town has 55200 people. The population grows by 25% every year. What will the population be after 2 years?
7. 7.Find the compound interest on ₹11000 at 20% per year for 1 year, compounded every year (in ₹).
8. 8.Find the compound interest on ₹23000 at 10% per year for 3 years, compounded every year (in ₹).
9. 9.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
10. 10.What amount will ₹54200 grow to in 1 year at 25% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹46600 at 10% per year for 2 years, compounded every year (in ₹).
12. 12.A scooter is worth ₹56000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
13. 13.What amount will ₹13900 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 ₹47500 at 12% per year for 2 years (in ₹)?
15. 15.What amount will ₹33100 grow to in 1 year at 25% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹24100 at 20% per year for 2 years, compounded every year (in ₹).
17. 17.Find the compound interest on ₹41300 at 5% per year for 1 year, compounded every year (in ₹).
18. 18.A scooter is worth ₹10000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹51700 at 10% per year for 2 years (in ₹)?
20. 20.What amount will ₹42000 grow to in 1 year at 20% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹18700 at 10% per year for 1 year, compounded every year (in ₹).
22. 22.A town has 26800 people. The population grows by 15% every year. What will the population be after 2 years?
23. 23.A scooter is worth ₹3100. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
24. 24.Find the compound interest on ₹7200 at 5% per year for 2 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹7300 at 20% per year for 1 year, compounded every year (in ₹).
26. 26.A scooter is worth ₹45000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
27. 27.A scooter is worth ₹39300. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
28. 28.What amount will ₹29700 grow to in 1 year at 8% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹47500 at 8% per year for 2 years, compounded every year (in ₹).
30. 30.A town has 16800 people. The population grows by 15% every year. What will the population be after 1 year?
31. 31.A scooter is worth ₹51400. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
32. 32.What amount will ₹42500 grow to in 2 years at 4% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹38400 at 5% per year for 2 years (in ₹)?
34. 34.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
35. 35.Find the compound interest on ₹46800 at 5% per year for 2 years, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹38800 at 20% per year for 2 years (in ₹)?
37. 37.A town has 35000 people. The population grows by 12% every year. What will the population be after 2 years?
38. 38.What is the difference between the compound interest and the simple interest on ₹13200 at 5% per year for 2 years (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹11400 at 10% per year for 2 years (in ₹)?
40. 40.Find the compound interest on ₹9100 at 8% per year for 1 year, compounded every year (in ₹).

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