Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 407 · 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 ₹42000 at 10% per year for 3 years, compounded every year (in ₹).
2. 2.What is the difference between the compound interest and the simple interest on ₹20000 at 5% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?
5. 5.A town has 5000 people. The population grows by 4% every year. What will the population be after 2 years?
6. 6.Find the compound interest on ₹59000 at 8% per year for 1 year, compounded every year (in ₹).
7. 7.Find the compound interest on ₹5800 at 4% per year for 1 year, compounded every year (in ₹).
8. 8.Find the compound interest on ₹5000 at 8% per year for 2 years, compounded every year (in ₹).
9. 9.Find the compound interest on ₹47000 at 20% per year for 3 years, compounded every year (in ₹).
10. 10.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹19500 at 12% per year for 1 year, compounded every year (in ₹).
12. 12.A scooter is worth ₹42800. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹19800 at 20% per year for 2 years (in ₹)?
14. 14.Find the compound interest on ₹14200 at 20% per year for 1 year, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹42400 at 5% per year for 2 years (in ₹)?
16. 16.What amount will ₹6600 grow to in 1 year at 10% per year compound interest (in ₹)?
17. 17.What amount will ₹52600 grow to in 1 year at 12% per year compound interest (in ₹)?
18. 18.What amount will ₹30400 grow to in 3 years at 25% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹12500 at 4% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹9300 at 10% per year for 1 year, compounded every year (in ₹).
21. 21.What amount will ₹41500 grow to in 3 years at 20% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹44800 at 5% per year for 2 years, compounded every year (in ₹).
23. 23.A town has 58000 people. The population grows by 10% every year. What will the population be after 3 years?
24. 24.A town has 47700 people. The population grows by 4% every year. What will the population be after 1 year?
25. 25.Find the compound interest on ₹9700 at 20% per year for 1 year, compounded every year (in ₹).
26. 26.What amount will ₹16400 grow to in 1 year at 8% per year compound interest (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹39100 at 20% per year for 2 years (in ₹)?
28. 28.A town has 57500 people. The population grows by 12% every year. What will the population be after 2 years?
29. 29.What amount will ₹35000 grow to in 2 years at 8% per year compound interest (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹12500 at 12% per year for 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
32. 32.A scooter is worth ₹16000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
33. 33.A scooter is worth ₹48000. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
34. 34.A scooter is worth ₹56600. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹22200 at 10% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹11200 at 10% per year for 2 years (in ₹)?
37. 37.What amount will ₹30900 grow to in 1 year at 10% per year compound interest (in ₹)?
38. 38.A scooter is worth ₹18700. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
39. 39.A scooter is worth ₹15800. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
40. 40.What amount will ₹48000 grow to in 3 years at 25% per year compound interest (in ₹)?

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