Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 568 · 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 ₹9100. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
2. 2.A scooter is worth ₹18300. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
3. 3.Find the compound interest on ₹6500 at 8% per year for 1 year, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹27500 at 12% per year for 2 years (in ₹)?
5. 5.What amount will ₹33400 grow to in 1 year at 8% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹17500 at 8% per year for 2 years, compounded every year (in ₹).
7. 7.A scooter is worth ₹24000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
8. 8.A town has 20000 people. The population grows by 10% every year. What will the population be after 3 years?
9. 9.What is the difference between the compound interest and the simple interest on ₹5000 at 12% per year for 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹17300 at 10% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
12. 12.A scooter is worth ₹56000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
13. 13.A scooter is worth ₹22500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
14. 14.A town has 55500 people. The population grows by 20% every year. What will the population be after 3 years?
15. 15.What amount will ₹12800 grow to in 1 year at 5% per year compound interest (in ₹)?
16. 16.A scooter is worth ₹21000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
17. 17.A town has 58000 people. The population grows by 5% every year. What will the population be after 2 years?
18. 18.What amount will ₹14400 grow to in 2 years at 5% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹12000 at 10% per year for 3 years, compounded every year (in ₹).
20. 20.What is the difference between the compound interest and the simple interest on ₹53200 at 20% per year for 2 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹45600 at 20% per year for 2 years (in ₹)?
22. 22.A town has 13200 people. The population grows by 12% every year. What will the population be after 1 year?
23. 23.What is the difference between the compound interest and the simple interest on ₹49200 at 25% per year for 2 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹7300 at 20% per year for 2 years (in ₹)?
25. 25.Find the compound interest on ₹38300 at 10% per year for 1 year, compounded every year (in ₹).
26. 26.What amount will ₹37400 grow to in 1 year at 15% per year compound interest (in ₹)?
27. 27.What amount will ₹12500 grow to in 2 years at 4% per year compound interest (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹34800 at 5% per year for 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹37500 at 4% per year for 2 years (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹55000 at 8% per year for 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹15000 at 4% per year for 2 years (in ₹)?
32. 32.What amount will ₹29300 grow to in 1 year at 10% per year compound interest (in ₹)?
33. 33.What amount will ₹34400 grow to in 2 years at 20% per year compound interest (in ₹)?
34. 34.A town has 26600 people. The population grows by 4% every year. What will the population be after 1 year?
35. 35.What is the difference between the compound interest and the simple interest on ₹4400 at 5% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹4300 at 20% per year for 2 years (in ₹)?
37. 37.A town has 10700 people. The population grows by 20% every year. What will the population be after 1 year?
38. 38.What amount will ₹43700 grow to in 1 year at 4% per year compound interest (in ₹)?
39. 39.A town has 55400 people. The population grows by 10% every year. What will the population be after 2 years?
40. 40.What is the difference between the compound interest and the simple interest on ₹52000 at 5% per year for 2 years (in ₹)?

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