Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 210 · 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.Find the compound interest on ₹9300 at 20% per year for 1 year, compounded every year (in ₹).
2. 2.What is the difference between the compound interest and the simple interest on ₹7500 at 8% per year for 2 years (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹8800 at 15% per year for 2 years (in ₹)?
4. 4.A scooter is worth ₹45000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹42000 at 5% per year for 2 years (in ₹)?
6. 6.Find the compound interest on ₹49900 at 4% per year for 1 year, compounded every year (in ₹).
7. 7.Find the compound interest on ₹14400 at 12% per year for 1 year, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹35500 at 8% per year for 1 year, compounded every year (in ₹).
10. 10.A scooter is worth ₹21000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹42500 at 4% per year for 2 years (in ₹)?
12. 12.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹17500 at 8% per year for 2 years (in ₹)?
14. 14.What amount will ₹6000 grow to in 2 years at 15% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹40700 at 4% per year for 1 year, compounded every year (in ₹).
16. 16.A town has 5000 people. The population grows by 4% every year. What will the population be after 2 years?
17. 17.Find the compound interest on ₹56400 at 25% per year for 2 years, compounded every year (in ₹).
18. 18.What is the difference between the compound interest and the simple interest on ₹42500 at 12% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹30400 at 5% per year for 2 years (in ₹)?
20. 20.What amount will ₹58300 grow to in 1 year at 20% per year compound interest (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹10400 at 5% per year for 2 years (in ₹)?
22. 22.A scooter is worth ₹27500. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
23. 23.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹57500 at 8% per year for 2 years (in ₹)?
25. 25.A town has 52500 people. The population grows by 12% every year. What will the population be after 2 years?
26. 26.Find the compound interest on ₹3000 at 10% per year for 3 years, compounded every year (in ₹).
27. 27.What amount will ₹40900 grow to in 1 year at 10% per year compound interest (in ₹)?
28. 28.Find the compound interest on ₹35200 at 15% per year for 2 years, compounded every year (in ₹).
29. 29.What amount will ₹20600 grow to in 1 year at 4% per year compound interest (in ₹)?
30. 30.A town has 35000 people. The population grows by 12% every year. What will the population be after 2 years?
31. 31.What is the difference between the compound interest and the simple interest on ₹42300 at 10% per year for 2 years (in ₹)?
32. 32.A scooter is worth ₹53000. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹26400 at 25% per year for 2 years (in ₹)?
34. 34.A scooter is worth ₹22500. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
35. 35.What amount will ₹12900 grow to in 1 year at 4% per year compound interest (in ₹)?
36. 36.A town has 17100 people. The population grows by 25% every year. What will the population be after 1 year?
37. 37.What amount will ₹45000 grow to in 2 years at 12% per year compound interest (in ₹)?
38. 38.A town has 8800 people. The population grows by 25% every year. What will the population be after 2 years?
39. 39.What is the difference between the compound interest and the simple interest on ₹47400 at 10% per year for 2 years (in ₹)?
40. 40.What amount will ₹59500 grow to in 2 years at 10% per year compound interest (in ₹)?

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