Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 558 · 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 ₹49900 at 10% per year for 2 years, compounded every year (in ₹).
2. 2.A town has 36500 people. The population grows by 20% every year. What will the population be after 3 years?
3. 3.What is the difference between the compound interest and the simple interest on ₹6400 at 15% per year for 2 years (in ₹)?
4. 4.A scooter is worth ₹6100. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹32800 at 15% per year for 2 years (in ₹)?
6. 6.What amount will ₹18000 grow to in 3 years at 10% per year compound interest (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹46800 at 25% per year for 2 years (in ₹)?
8. 8.What amount will ₹8000 grow to in 3 years at 10% per year compound interest (in ₹)?
9. 9.What amount will ₹9600 grow to in 1 year at 5% per year compound interest (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹15000 at 8% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹6800 at 5% per year for 1 year, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹48400 at 25% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹6000 at 10% per year for 3 years, compounded every year (in ₹).
14. 14.Find the compound interest on ₹47200 at 25% per year for 2 years, compounded every year (in ₹).
15. 15.What amount will ₹56000 grow to in 3 years at 15% per year compound interest (in ₹)?
16. 16.What amount will ₹52000 grow to in 3 years at 20% per year compound interest (in ₹)?
17. 17.A town has 8300 people. The population grows by 12% every year. What will the population be after 1 year?
18. 18.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
19. 19.Find the compound interest on ₹57600 at 25% per year for 2 years, compounded every year (in ₹).
20. 20.What is the difference between the compound interest and the simple interest on ₹55600 at 10% per year for 2 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹55600 at 5% per year for 2 years (in ₹)?
22. 22.Find the compound interest on ₹4100 at 25% per year for 1 year, compounded every year (in ₹).
23. 23.A scooter is worth ₹7800. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
24. 24.Find the compound interest on ₹19000 at 10% per year for 3 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹18000 at 20% per year for 1 year, compounded every year (in ₹).
26. 26.Find the compound interest on ₹56000 at 15% per year for 3 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹19400 at 10% per year for 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹37500 at 8% per year for 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹55000 at 8% per year for 2 years (in ₹)?
30. 30.What amount will ₹49000 grow to in 3 years at 10% per year compound interest (in ₹)?
31. 31.A scooter is worth ₹60000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
32. 32.What amount will ₹10000 grow to in 2 years at 12% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹33500 at 25% per year for 1 year, compounded every year (in ₹).
34. 34.What amount will ₹58500 grow to in 1 year at 10% per year compound interest (in ₹)?
35. 35.A scooter is worth ₹22000. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
36. 36.What amount will ₹16400 grow to in 2 years at 25% per year compound interest (in ₹)?
37. 37.What amount will ₹44700 grow to in 2 years at 10% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹20000 at 25% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹9900 at 10% per year for 2 years, compounded every year (in ₹).
40. 40.Find the compound interest on ₹13600 at 25% per year for 1 year, compounded every year (in ₹).

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