Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 927 · 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 ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
2. 2.Find the compound interest on ₹58500 at 20% 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 12% per year for 2 years (in ₹)?
4. 4.A scooter is worth ₹32000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
5. 5.A scooter is worth ₹46200. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
6. 6.Find the compound interest on ₹28700 at 10% per year for 1 year, compounded every year (in ₹).
7. 7.What amount will ₹31200 grow to in 2 years at 25% per year compound interest (in ₹)?
8. 8.What amount will ₹52500 grow to in 2 years at 8% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
10. 10.Find the compound interest on ₹7500 at 8% per year for 2 years, compounded every year (in ₹).
11. 11.A town has 24000 people. The population grows by 10% every year. What will the population be after 2 years?
12. 12.A town has 25000 people. The population grows by 8% every year. What will the population be after 2 years?
13. 13.Find the compound interest on ₹7000 at 10% per year for 3 years, compounded every year (in ₹).
14. 14.A scooter is worth ₹47200. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
15. 15.Find the compound interest on ₹27100 at 25% per year for 1 year, compounded every year (in ₹).
16. 16.What is the difference between the compound interest and the simple interest on ₹53800 at 10% per year for 2 years (in ₹)?
17. 17.What amount will ₹5000 grow to in 2 years at 4% per year compound interest (in ₹)?
18. 18.What amount will ₹41700 grow to in 1 year at 20% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹20800 at 5% per year for 2 years (in ₹)?
20. 20.What amount will ₹39200 grow to in 1 year at 5% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹32500 at 12% per year for 2 years, compounded every year (in ₹).
22. 22.Find the compound interest on ₹30800 at 15% per year for 2 years, compounded every year (in ₹).
23. 23.What amount will ₹55000 grow to in 2 years at 12% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹35000 at 4% per year for 2 years, compounded every year (in ₹).
25. 25.A scooter is worth ₹23600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
26. 26.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
27. 27.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
28. 28.Find the compound interest on ₹44800 at 20% per year for 1 year, compounded every year (in ₹).
29. 29.Find the compound interest on ₹9100 at 15% per year for 1 year, compounded every year (in ₹).
30. 30.Find the compound interest on ₹60000 at 4% per year for 2 years, compounded every year (in ₹).
31. 31.Find the compound interest on ₹27000 at 10% per year for 3 years, compounded every year (in ₹).
32. 32.What amount will ₹43200 grow to in 2 years at 5% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹9600 at 15% per year for 2 years, compounded every year (in ₹).
34. 34.Find the compound interest on ₹22500 at 8% per year for 2 years, compounded every year (in ₹).
35. 35.What amount will ₹10000 grow to in 2 years at 12% per year compound interest (in ₹)?
36. 36.What amount will ₹60000 grow to in 2 years at 12% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹12000 at 10% per year for 3 years, compounded every year (in ₹).
38. 38.A scooter is worth ₹8000. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹38000 at 25% per year for 2 years (in ₹)?
40. 40.What amount will ₹5600 grow to in 1 year at 8% per year compound interest (in ₹)?

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