Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 814 · 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 ₹52500 grow to in 2 years at 12% per year compound interest (in ₹)?
2. 2.Find the compound interest on ₹32000 at 25% per year for 3 years, compounded every year (in ₹).
3. 3.What amount will ₹12400 grow to in 1 year at 15% per year compound interest (in ₹)?
4. 4.What amount will ₹50800 grow to in 1 year at 10% per year compound interest (in ₹)?
5. 5.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
6. 6.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹30000 at 4% per year for 2 years, compounded every year (in ₹).
8. 8.A scooter is worth ₹7000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
9. 9.What amount will ₹5000 grow to in 2 years at 8% per year compound interest (in ₹)?
10. 10.A town has 20100 people. The population grows by 10% every year. What will the population be after 2 years?
11. 11.What is the difference between the compound interest and the simple interest on ₹7500 at 8% per year for 2 years (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹60000 at 12% per year for 2 years (in ₹)?
13. 13.What amount will ₹52800 grow to in 2 years at 5% per year compound interest (in ₹)?
14. 14.A scooter is worth ₹36800. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
15. 15.What amount will ₹31800 grow to in 1 year at 25% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹4400 at 10% per year for 1 year, compounded every year (in ₹).
17. 17.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
18. 18.A town has 22900 people. The population grows by 20% every year. What will the population be after 1 year?
19. 19.What is the difference between the compound interest and the simple interest on ₹20000 at 4% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
21. 21.A town has 21400 people. The population grows by 20% every year. What will the population be after 1 year?
22. 22.What amount will ₹17600 grow to in 3 years at 25% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹17600 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 ₹45000 at 4% per year for 2 years (in ₹)?
25. 25.Find the compound interest on ₹46800 at 5% per year for 2 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹47500 at 8% per year for 2 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹17500 at 12% per year for 2 years (in ₹)?
28. 28.A scooter is worth ₹8100. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹12000 at 15% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹12300 at 8% per year for 1 year, compounded every year (in ₹).
31. 31.Find the compound interest on ₹52800 at 10% per year for 1 year, compounded every year (in ₹).
32. 32.Find the compound interest on ₹21000 at 20% per year for 3 years, compounded every year (in ₹).
33. 33.A town has 42700 people. The population grows by 20% every year. What will the population be after 1 year?
34. 34.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
35. 35.What amount will ₹4400 grow to in 1 year at 5% per year compound interest (in ₹)?
36. 36.Find the compound interest on ₹49600 at 5% per year for 2 years, compounded every year (in ₹).
37. 37.What amount will ₹45000 grow to in 2 years at 8% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹40000 at 8% per year for 2 years (in ₹)?
39. 39.A scooter is worth ₹39200. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
40. 40.What amount will ₹53600 grow to in 1 year at 15% per year compound interest (in ₹)?

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