Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 550 · 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 ₹7700 grow to in 1 year at 4% per year compound interest (in ₹)?
2. 2.What amount will ₹36200 grow to in 2 years at 20% per year compound interest (in ₹)?
3. 3.What amount will ₹46000 grow to in 3 years at 20% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹24000 at 15% per year for 3 years, compounded every year (in ₹).
5. 5.A scooter is worth ₹38700. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹18000 at 5% per year for 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹10800 at 15% per year for 2 years (in ₹)?
8. 8.What amount will ₹12500 grow to in 2 years at 4% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹50700 at 10% per year for 1 year, compounded every year (in ₹).
10. 10.What amount will ₹21300 grow to in 2 years at 10% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹57200 at 8% per year for 1 year, compounded every year (in ₹).
12. 12.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
13. 13.What amount will ₹32400 grow to in 2 years at 25% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹10400 at 15% per year for 2 years (in ₹)?
15. 15.A scooter is worth ₹4400. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
16. 16.A scooter is worth ₹35900. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
17. 17.Find the compound interest on ₹30400 at 25% per year for 3 years, compounded every year (in ₹).
18. 18.Find the compound interest on ₹16600 at 12% per year for 1 year, compounded every year (in ₹).
19. 19.A scooter is worth ₹55000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
20. 20.Find the compound interest on ₹40100 at 10% per year for 1 year, compounded every year (in ₹).
21. 21.A scooter is worth ₹3200. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
22. 22.A town has 48000 people. The population grows by 10% every year. What will the population be after 3 years?
23. 23.Find the compound interest on ₹45200 at 25% per year for 2 years, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹37000 at 10% per year for 2 years (in ₹)?
25. 25.Find the compound interest on ₹16000 at 10% per year for 3 years, compounded every year (in ₹).
26. 26.What amount will ₹25800 grow to in 1 year at 25% per year compound interest (in ₹)?
27. 27.What amount will ₹3200 grow to in 3 years at 25% per year compound interest (in ₹)?
28. 28.Find the compound interest on ₹29200 at 15% per year for 2 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹24100 at 4% per year for 1 year, compounded every year (in ₹).
30. 30.Find the compound interest on ₹20000 at 8% per year for 2 years, compounded every year (in ₹).
31. 31.Find the compound interest on ₹20800 at 15% per year for 1 year, compounded every year (in ₹).
32. 32.A scooter is worth ₹45000. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
33. 33.What amount will ₹57500 grow to in 2 years at 4% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹47500 at 8% per year for 2 years, compounded every year (in ₹).
35. 35.A town has 12000 people. The population grows by 10% every year. What will the population be after 3 years?
36. 36.What amount will ₹7900 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 ₹60000 at 4% per year for 2 years (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹15000 at 12% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹5000 at 4% per year for 2 years, compounded every year (in ₹).
40. 40.Find the compound interest on ₹7600 at 25% per year for 2 years, compounded every year (in ₹).

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