Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 922 · 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.A scooter is worth ₹42000. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
2. 2.Find the compound interest on ₹23600 at 15% per year for 2 years, compounded every year (in ₹).
3. 3.What is the difference between the compound interest and the simple interest on ₹56000 at 5% per year for 2 years (in ₹)?
4. 4.What amount will ₹35600 grow to in 2 years at 5% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹12000 at 5% per year for 2 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹14400 at 5% per year for 2 years (in ₹)?
7. 7.Find the compound interest on ₹10000 at 12% per year for 2 years, compounded every year (in ₹).
8. 8.What amount will ₹11800 grow to in 1 year at 20% per year compound interest (in ₹)?
9. 9.A scooter is worth ₹46200. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
10. 10.What amount will ₹50400 grow to in 2 years at 15% per year compound interest (in ₹)?
11. 11.What amount will ₹26000 grow to in 3 years at 20% per year compound interest (in ₹)?
12. 12.A town has 8000 people. The population grows by 5% every year. What will the population be after 3 years?
13. 13.What is the difference between the compound interest and the simple interest on ₹23700 at 10% per year for 2 years (in ₹)?
14. 14.What amount will ₹14500 grow to in 1 year at 8% per year compound interest (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹7200 at 20% per year for 2 years (in ₹)?
16. 16.A scooter is worth ₹7900. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
17. 17.Find the compound interest on ₹38600 at 15% per year for 1 year, compounded every year (in ₹).
18. 18.Find the compound interest on ₹34800 at 15% per year for 2 years, compounded every year (in ₹).
19. 19.What amount will ₹34400 grow to in 1 year at 8% per year compound interest (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹37500 at 12% per year for 2 years (in ₹)?
21. 21.A town has 4400 people. The population grows by 25% every year. What will the population be after 1 year?
22. 22.What amount will ₹36400 grow to in 2 years at 10% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹38000 at 25% per year for 2 years, compounded every year (in ₹).
24. 24.A town has 7900 people. The population grows by 12% every year. What will the population be after 1 year?
25. 25.A scooter is worth ₹9600. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
26. 26.Find the compound interest on ₹22000 at 10% per year for 3 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹12400 at 15% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹59200 at 15% per year for 2 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹20000 at 8% per year for 2 years, compounded every year (in ₹).
30. 30.A scooter is worth ₹47400. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
31. 31.Find the compound interest on ₹1600 at 25% per year for 3 years, compounded every year (in ₹).
32. 32.What amount will ₹12400 grow to in 1 year at 25% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹8600 at 4% per year for 1 year, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹29600 at 25% per year for 2 years (in ₹)?
35. 35.Find the compound interest on ₹5000 at 8% per year for 2 years, compounded every year (in ₹).
36. 36.What amount will ₹9800 grow to in 1 year at 4% per year compound interest (in ₹)?
37. 37.What amount will ₹20000 grow to in 2 years at 25% per year compound interest (in ₹)?
38. 38.What amount will ₹46000 grow to in 3 years at 10% per year compound interest (in ₹)?
39. 39.What amount will ₹59500 grow to in 1 year at 5% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹10000 at 15% per year for 2 years, compounded every year (in ₹).

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