Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 335 · 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 ₹42500 at 4% per year for 2 years (in ₹)?
2. 2.Find the compound interest on ₹53700 at 15% per year for 1 year, compounded every year (in ₹).
3. 3.A town has 1600 people. The population grows by 25% every year. What will the population be after 3 years?
4. 4.Find the compound interest on ₹2400 at 4% per year for 1 year, compounded every year (in ₹).
5. 5.Find the compound interest on ₹4100 at 4% per year for 1 year, compounded every year (in ₹).
6. 6.What amount will ₹46000 grow to in 3 years at 20% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
8. 8.A town has 8200 people. The population grows by 4% every year. What will the population be after 1 year?
9. 9.Find the compound interest on ₹52700 at 10% per year for 2 years, compounded every year (in ₹).
10. 10.What amount will ₹13900 grow to in 1 year at 20% per year compound interest (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹49200 at 5% per year for 2 years (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹52400 at 25% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
14. 14.What amount will ₹11800 grow to in 1 year at 15% per year compound interest (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
16. 16.A town has 16800 people. The population grows by 25% every year. What will the population be after 1 year?
17. 17.What is the difference between the compound interest and the simple interest on ₹54200 at 10% per year for 2 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹7500 at 8% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹54200 at 12% per year for 1 year, compounded every year (in ₹).
20. 20.A town has 32500 people. The population grows by 10% every year. What will the population be after 2 years?
21. 21.A town has 12500 people. The population grows by 8% every year. What will the population be after 2 years?
22. 22.What is the difference between the compound interest and the simple interest on ₹53800 at 10% per year for 2 years (in ₹)?
23. 23.A scooter is worth ₹9200. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹9800 at 10% per year for 2 years (in ₹)?
25. 25.A scooter is worth ₹42800. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
26. 26.Find the compound interest on ₹52800 at 25% per year for 3 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹60000 at 5% per year for 2 years (in ₹)?
28. 28.What amount will ₹25000 grow to in 3 years at 10% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹37600 at 15% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹34800 at 5% per year for 2 years, compounded every year (in ₹).
31. 31.Find the compound interest on ₹57600 at 25% per year for 1 year, compounded every year (in ₹).
32. 32.A scooter is worth ₹12700. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
33. 33.What amount will ₹11400 grow to in 2 years at 20% per year compound interest (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹54000 at 25% per year for 2 years (in ₹)?
35. 35.A town has 52000 people. The population grows by 25% every year. What will the population be after 1 year?
36. 36.What amount will ₹45700 grow to in 1 year at 25% per year compound interest (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹48800 at 15% per year for 2 years (in ₹)?
38. 38.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹11600 at 15% per year for 2 years (in ₹)?
40. 40.Find the compound interest on ₹13400 at 4% per year for 1 year, compounded every year (in ₹).

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