Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 725 · 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 ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
2. 2.A town has 49200 people. The population grows by 5% every year. What will the population be after 2 years?
3. 3.What is the difference between the compound interest and the simple interest on ₹52500 at 12% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹11800 at 8% per year for 1 year, compounded every year (in ₹).
5. 5.What is the difference between the compound interest and the simple interest on ₹58000 at 25% per year for 2 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹32400 at 25% per year for 2 years (in ₹)?
7. 7.What amount will ₹27500 grow to in 2 years at 8% per year compound interest (in ₹)?
8. 8.A town has 10400 people. The population grows by 10% every year. What will the population be after 1 year?
9. 9.A town has 57500 people. The population grows by 8% every year. What will the population be after 2 years?
10. 10.A town has 4300 people. The population grows by 10% every year. What will the population be after 1 year?
11. 11.Find the compound interest on ₹36700 at 25% per year for 1 year, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹6400 at 10% per year for 2 years (in ₹)?
13. 13.What amount will ₹22000 grow to in 1 year at 5% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹12500 at 4% per year for 2 years (in ₹)?
15. 15.What amount will ₹24200 grow to in 1 year at 15% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹47400 at 10% per year for 2 years, compounded every year (in ₹).
17. 17.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹58100 at 8% per year for 1 year, compounded every year (in ₹).
19. 19.A scooter is worth ₹48400. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
20. 20.Find the compound interest on ₹10000 at 8% per year for 2 years, compounded every year (in ₹).
21. 21.What amount will ₹44600 grow to in 1 year at 20% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
23. 23.What amount will ₹22400 grow to in 1 year at 25% per year compound interest (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹40000 at 8% per year for 2 years (in ₹)?
26. 26.What amount will ₹38800 grow to in 1 year at 8% per year compound interest (in ₹)?
27. 27.What amount will ₹17200 grow to in 2 years at 5% per year compound interest (in ₹)?
28. 28.What amount will ₹13200 grow to in 1 year at 25% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹52000 at 5% per year for 2 years (in ₹)?
30. 30.A town has 16000 people. The population grows by 5% every year. What will the population be after 3 years?
31. 31.A town has 48000 people. The population grows by 5% every year. What will the population be after 3 years?
32. 32.A scooter is worth ₹50000. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
33. 33.Find the compound interest on ₹19000 at 10% per year for 3 years, compounded every year (in ₹).
34. 34.Find the compound interest on ₹53100 at 8% per year for 1 year, compounded every year (in ₹).
35. 35.A town has 30500 people. The population grows by 4% every year. What will the population be after 1 year?
36. 36.A town has 16900 people. The population grows by 20% every year. What will the population be after 2 years?
37. 37.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
38. 38.What amount will ₹35500 grow to in 1 year at 8% per year compound interest (in ₹)?
39. 39.What amount will ₹2300 grow to in 1 year at 25% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?

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