Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 252 · 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 ₹5000 at 12% per year for 2 years, compounded every year (in ₹).
2. 2.A town has 34100 people. The population grows by 10% every year. What will the population be after 2 years?
3. 3.Find the compound interest on ₹8200 at 10% per year for 1 year, compounded every year (in ₹).
4. 4.Find the compound interest on ₹21800 at 12% per year for 1 year, compounded every year (in ₹).
5. 5.Find the compound interest on ₹52500 at 12% per year for 2 years, compounded every year (in ₹).
6. 6.A scooter is worth ₹24800. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹10200 at 10% per year for 2 years (in ₹)?
8. 8.Find the compound interest on ₹32500 at 12% per year for 2 years, compounded every year (in ₹).
9. 9.A scooter is worth ₹6300. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹30900 at 20% per year for 2 years (in ₹)?
11. 11.A town has 27700 people. The population grows by 10% every year. What will the population be after 2 years?
12. 12.Find the compound interest on ₹6200 at 15% per year for 1 year, compounded every year (in ₹).
13. 13.A town has 33200 people. The population grows by 8% every year. What will the population be after 1 year?
14. 14.What is the difference between the compound interest and the simple interest on ₹17600 at 5% per year for 2 years (in ₹)?
15. 15.Find the compound interest on ₹29800 at 20% per year for 2 years, compounded every year (in ₹).
16. 16.A town has 8800 people. The population grows by 25% every year. What will the population be after 2 years?
17. 17.A scooter is worth ₹43900. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
18. 18.A scooter is worth ₹40000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
19. 19.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
20. 20.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
21. 21.What amount will ₹40000 grow to in 1 year at 5% per year compound interest (in ₹)?
22. 22.What amount will ₹30000 grow to in 2 years at 8% per year compound interest (in ₹)?
23. 23.A scooter is worth ₹28200. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
24. 24.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹50000 at 10% per year for 2 years (in ₹)?
26. 26.What amount will ₹7100 grow to in 1 year at 10% per year compound interest (in ₹)?
27. 27.What amount will ₹35500 grow to in 1 year at 10% per year compound interest (in ₹)?
28. 28.What amount will ₹11800 grow to in 1 year at 8% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹27400 at 20% per year for 2 years (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹37600 at 25% per year for 2 years (in ₹)?
31. 31.Find the compound interest on ₹15000 at 12% per year for 2 years, compounded every year (in ₹).
32. 32.A town has 32000 people. The population grows by 5% every year. What will the population be after 3 years?
33. 33.A town has 47000 people. The population grows by 10% every year. What will the population be after 3 years?
34. 34.What amount will ₹17500 grow to in 2 years at 8% per year compound interest (in ₹)?
35. 35.What amount will ₹40200 grow to in 1 year at 8% per year compound interest (in ₹)?
36. 36.A scooter is worth ₹38800. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹40400 at 5% per year for 2 years (in ₹)?
38. 38.What amount will ₹56800 grow to in 2 years at 5% per year compound interest (in ₹)?
39. 39.A town has 8000 people. The population grows by 5% every year. What will the population be after 3 years?
40. 40.What amount will ₹53200 grow to in 2 years at 5% per year compound interest (in ₹)?

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