Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 989 · 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 ₹59200 at 25% per year for 3 years, compounded every year (in ₹).
2. 2.What is the difference between the compound interest and the simple interest on ₹40000 at 8% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹25700 at 4% per year for 1 year, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹42500 at 12% per year for 2 years (in ₹)?
5. 5.A scooter is worth ₹55000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
6. 6.Find the compound interest on ₹28000 at 20% per year for 3 years, compounded every year (in ₹).
7. 7.A town has 41300 people. The population grows by 8% every year. What will the population be after 1 year?
8. 8.What amount will ₹24000 grow to in 3 years at 25% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹53000 at 20% per year for 2 years, compounded every year (in ₹).
10. 10.What is the difference between the compound interest and the simple interest on ₹29200 at 5% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
12. 12.A town has 8000 people. The population grows by 15% every year. What will the population be after 2 years?
13. 13.A scooter is worth ₹14400. Its value falls by 10% every year. What will it be worth after 1 year (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 ₹15000 at 4% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹13200 at 20% per year for 2 years (in ₹)?
17. 17.A town has 59000 people. The population grows by 10% every year. What will the population be after 3 years?
18. 18.A town has 55000 people. The population grows by 15% every year. What will the population be after 1 year?
19. 19.What amount will ₹34400 grow to in 2 years at 25% per year compound interest (in ₹)?
20. 20.A scooter is worth ₹30500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
21. 21.Find the compound interest on ₹33900 at 12% per year for 1 year, compounded every year (in ₹).
22. 22.Find the compound interest on ₹59200 at 5% per year for 1 year, compounded every year (in ₹).
23. 23.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
24. 24.What amount will ₹21000 grow to in 3 years at 20% per year compound interest (in ₹)?
25. 25.A town has 27900 people. The population grows by 5% every year. What will the population be after 1 year?
26. 26.Find the compound interest on ₹6700 at 20% per year for 1 year, compounded every year (in ₹).
27. 27.What amount will ₹55000 grow to in 3 years at 10% per year compound interest (in ₹)?
28. 28.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹30000 at 12% per year for 2 years, compounded every year (in ₹).
30. 30.A town has 25600 people. The population grows by 25% every year. What will the population be after 3 years?
31. 31.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
32. 32.What amount will ₹51400 grow to in 1 year at 12% per year compound interest (in ₹)?
33. 33.What amount will ₹37300 grow to in 1 year at 10% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹31100 at 12% per year for 1 year, compounded every year (in ₹).
35. 35.Find the compound interest on ₹41600 at 20% per year for 2 years, compounded every year (in ₹).
36. 36.What amount will ₹20700 grow to in 1 year at 10% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹58400 at 8% per year for 1 year, compounded every year (in ₹).
38. 38.What is the difference between the compound interest and the simple interest on ₹47200 at 10% per year for 2 years (in ₹)?
39. 39.A town has 32300 people. The population grows by 20% every year. What will the population be after 1 year?
40. 40.What amount will ₹31600 grow to in 2 years at 5% per year compound interest (in ₹)?

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