Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 931 · 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 8200 people. The population grows by 5% every year. What will the population be after 1 year?
2. 2.Find the compound interest on ₹22500 at 20% per year for 1 year, compounded every year (in ₹).
3. 3.What is the difference between the compound interest and the simple interest on ₹30400 at 25% per year for 2 years (in ₹)?
4. 4.What amount will ₹55000 grow to in 2 years at 8% per year compound interest (in ₹)?
5. 5.Find the compound interest on ₹48700 at 5% per year for 1 year, compounded every year (in ₹).
6. 6.A scooter is worth ₹27300. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
7. 7.Find the compound interest on ₹17500 at 8% per year for 2 years, compounded every year (in ₹).
8. 8.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
9. 9.A town has 28400 people. The population grows by 10% every year. What will the population be after 2 years?
10. 10.A scooter is worth ₹10800. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
11. 11.A town has 52600 people. The population grows by 15% every year. What will the population be after 1 year?
12. 12.What is the difference between the compound interest and the simple interest on ₹60000 at 8% per year for 2 years (in ₹)?
13. 13.What amount will ₹16000 grow to in 2 years at 15% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹38000 at 20% per year for 3 years, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹12000 at 5% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹15000 at 8% per year for 2 years (in ₹)?
17. 17.A scooter is worth ₹16000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
18. 18.A scooter is worth ₹12400. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
19. 19.A town has 23000 people. The population grows by 8% every year. What will the population be after 1 year?
20. 20.A town has 48000 people. The population grows by 5% every year. What will the population be after 3 years?
21. 21.A town has 28400 people. The population grows by 12% every year. What will the population be after 1 year?
22. 22.Find the compound interest on ₹27100 at 12% per year for 1 year, compounded every year (in ₹).
23. 23.What amount will ₹37500 grow to in 1 year at 8% per year compound interest (in ₹)?
24. 24.A scooter is worth ₹35100. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
25. 25.Find the compound interest on ₹44400 at 20% per year for 1 year, compounded every year (in ₹).
26. 26.Find the compound interest on ₹35200 at 25% per year for 3 years, compounded every year (in ₹).
27. 27.Find the compound interest on ₹38900 at 12% per year for 1 year, compounded every year (in ₹).
28. 28.Find the compound interest on ₹56500 at 20% per year for 3 years, compounded every year (in ₹).
29. 29.What amount will ₹12000 grow to in 3 years at 10% per year compound interest (in ₹)?
30. 30.A town has 32000 people. The population grows by 5% every year. What will the population be after 1 year?
31. 31.What amount will ₹40100 grow to in 1 year at 4% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹27800 at 20% per year for 2 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹4000 at 5% per year for 2 years, compounded every year (in ₹).
34. 34.A town has 52500 people. The population grows by 12% every year. What will the population be after 2 years?
35. 35.What amount will ₹44700 grow to in 1 year at 10% per year compound interest (in ₹)?
36. 36.A town has 40600 people. The population grows by 15% every year. What will the population be after 1 year?
37. 37.A town has 6200 people. The population grows by 5% every year. What will the population be after 1 year?
38. 38.A scooter is worth ₹54100. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹10000 at 8% per year for 2 years (in ₹)?
40. 40.What amount will ₹52500 grow to in 2 years at 12% per year compound interest (in ₹)?

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