Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 980 · 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 amount will ₹57500 grow to in 2 years at 12% per year compound interest (in ₹)?
2. 2.Find the compound interest on ₹31000 at 10% per year for 3 years, compounded every year (in ₹).
3. 3.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹25400 at 25% per year for 1 year, compounded every year (in ₹).
5. 5.What amount will ₹49100 grow to in 1 year at 15% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹12200 at 5% per year for 1 year, compounded every year (in ₹).
7. 7.A scooter is worth ₹57500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
8. 8.A scooter is worth ₹10100. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
9. 9.What amount will ₹5800 grow to in 1 year at 4% per year compound interest (in ₹)?
10. 10.A scooter is worth ₹19100. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
11. 11.Find the compound interest on ₹22400 at 20% per year for 2 years, compounded every year (in ₹).
12. 12.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
13. 13.What amount will ₹27000 grow to in 3 years at 10% per year compound interest (in ₹)?
14. 14.What amount will ₹15000 grow to in 2 years at 8% per year compound interest (in ₹)?
15. 15.What amount will ₹30300 grow to in 1 year at 12% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹22100 at 10% per year for 2 years (in ₹)?
17. 17.A town has 44000 people. The population grows by 10% every year. What will the population be after 3 years?
18. 18.Find the compound interest on ₹6900 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 ₹47500 at 20% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹30800 at 5% per year for 2 years (in ₹)?
22. 22.A town has 48000 people. The population grows by 25% every year. What will the population be after 3 years?
23. 23.What is the difference between the compound interest and the simple interest on ₹17600 at 10% per year for 2 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹2800 at 5% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹47200 at 5% per year for 2 years (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹28400 at 15% per year for 2 years (in ₹)?
27. 27.A scooter is worth ₹18500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹55000 at 12% per year for 2 years (in ₹)?
29. 29.A scooter is worth ₹57500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
30. 30.A scooter is worth ₹5000. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
31. 31.A town has 19600 people. The population grows by 5% every year. What will the population be after 2 years?
32. 32.Find the compound interest on ₹2900 at 20% per year for 1 year, compounded every year (in ₹).
33. 33.What is the difference between the compound interest and the simple interest on ₹10300 at 20% per year for 2 years (in ₹)?
34. 34.A scooter is worth ₹45300. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹47200 at 15% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹57500 at 12% per year for 2 years (in ₹)?
37. 37.What amount will ₹34400 grow to in 1 year at 25% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹10000 at 15% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹13200 at 20% per year for 1 year, compounded every year (in ₹).
40. 40.A town has 31600 people. The population grows by 5% every year. What will the population be after 2 years?

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