Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 890 · 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 town has 48000 people. The population grows by 4% every year. What will the population be after 1 year?
2. 2.What amount will ₹9000 grow to in 1 year at 5% per year compound interest (in ₹)?
3. 3.What amount will ₹11500 grow to in 3 years at 20% per year compound interest (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹9600 at 20% per year for 2 years (in ₹)?
5. 5.A town has 27500 people. The population grows by 12% every year. What will the population be after 2 years?
6. 6.A scooter is worth ₹11200. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
7. 7.Find the compound interest on ₹36600 at 15% per year for 1 year, compounded every year (in ₹).
8. 8.What amount will ₹16000 grow to in 3 years at 15% per year compound interest (in ₹)?
9. 9.What amount will ₹4400 grow to in 2 years at 15% per year compound interest (in ₹)?
10. 10.A scooter is worth ₹29600. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
11. 11.What amount will ₹45000 grow to in 1 year at 8% per year compound interest (in ₹)?
12. 12.What amount will ₹47500 grow to in 2 years at 8% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
14. 14.Find the compound interest on ₹35000 at 4% per year for 2 years, compounded every year (in ₹).
15. 15.What amount will ₹56800 grow to in 2 years at 5% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹34400 at 10% per year for 2 years (in ₹)?
17. 17.What amount will ₹26100 grow to in 1 year at 25% per year compound interest (in ₹)?
18. 18.A scooter is worth ₹32000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
19. 19.Find the compound interest on ₹26200 at 10% per year for 1 year, compounded every year (in ₹).
20. 20.A town has 20900 people. The population grows by 10% every year. What will the population be after 2 years?
21. 21.A scooter is worth ₹27200. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
22. 22.A scooter is worth ₹57000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
23. 23.A town has 40000 people. The population grows by 15% every year. What will the population be after 3 years?
24. 24.A scooter is worth ₹12500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
25. 25.Find the compound interest on ₹12500 at 4% per year for 2 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹40800 at 20% per year for 2 years, compounded every year (in ₹).
27. 27.What amount will ₹20000 grow to in 2 years at 5% per year compound interest (in ₹)?
28. 28.What amount will ₹56100 grow to in 1 year at 4% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹53600 at 5% per year for 2 years (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹13700 at 10% per year for 2 years (in ₹)?
31. 31.What amount will ₹10000 grow to in 3 years at 10% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹10000 at 12% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
34. 34.Find the compound interest on ₹7500 at 4% per year for 2 years, compounded every year (in ₹).
35. 35.Find the compound interest on ₹10200 at 8% per year for 1 year, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹22800 at 15% per year for 2 years (in ₹)?
37. 37.What amount will ₹48400 grow to in 2 years at 25% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹34400 at 25% per year for 2 years (in ₹)?
39. 39.A scooter is worth ₹11000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
40. 40.What amount will ₹45000 grow to in 3 years at 20% per year compound interest (in ₹)?

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