Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 53 · 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.What amount will ₹3200 grow to in 1 year at 20% per year compound interest (in ₹)?
2. 2.A town has 48300 people. The population grows by 20% every year. What will the population be after 2 years?
3. 3.What amount will ₹22400 grow to in 3 years at 25% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹52300 at 10% per year for 1 year, compounded every year (in ₹).
5. 5.What is the difference between the compound interest and the simple interest on ₹40800 at 25% per year for 2 years (in ₹)?
6. 6.What amount will ₹55500 grow to in 3 years at 20% per year compound interest (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹14400 at 5% per year for 2 years (in ₹)?
8. 8.Find the compound interest on ₹49800 at 10% per year for 2 years, compounded every year (in ₹).
9. 9.A scooter is worth ₹6100. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
10. 10.A town has 12000 people. The population grows by 5% every year. What will the population be after 2 years?
11. 11.What is the difference between the compound interest and the simple interest on ₹5600 at 5% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹17000 at 12% per year for 1 year, compounded every year (in ₹).
13. 13.A scooter is worth ₹52500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
14. 14.A scooter is worth ₹11700. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
15. 15.What amount will ₹31000 grow to in 3 years at 20% per year compound interest (in ₹)?
16. 16.A town has 60000 people. The population grows by 20% every year. What will the population be after 2 years?
17. 17.Find the compound interest on ₹26000 at 25% per year for 2 years, compounded every year (in ₹).
18. 18.Find the compound interest on ₹52000 at 25% per year for 2 years, compounded every year (in ₹).
19. 19.Find the compound interest on ₹22100 at 10% per year for 2 years, compounded every year (in ₹).
20. 20.Find the compound interest on ₹6600 at 10% per year for 1 year, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹15000 at 8% per year for 2 years (in ₹)?
22. 22.What amount will ₹46500 grow to in 3 years at 20% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹42000 at 10% per year for 3 years, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹35000 at 8% per year for 2 years (in ₹)?
25. 25.Find the compound interest on ₹44500 at 5% per year for 1 year, compounded every year (in ₹).
26. 26.What amount will ₹54400 grow to in 1 year at 12% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹34500 at 20% per year for 3 years, compounded every year (in ₹).
28. 28.Find the compound interest on ₹11000 at 10% per year for 3 years, compounded every year (in ₹).
29. 29.What amount will ₹57600 grow to in 3 years at 25% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹7600 at 25% per year for 2 years, compounded every year (in ₹).
31. 31.What is the difference between the compound interest and the simple interest on ₹57200 at 5% per year for 2 years (in ₹)?
32. 32.Find the compound interest on ₹43000 at 10% per year for 3 years, compounded every year (in ₹).
33. 33.What amount will ₹52800 grow to in 3 years at 25% per year compound interest (in ₹)?
34. 34.A scooter is worth ₹26500. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
35. 35.What amount will ₹17600 grow to in 2 years at 15% per year compound interest (in ₹)?
36. 36.What amount will ₹9000 grow to in 1 year at 4% per year compound interest (in ₹)?
37. 37.What amount will ₹45000 grow to in 3 years at 20% per year compound interest (in ₹)?
38. 38.A scooter is worth ₹36600. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
39. 39.A scooter is worth ₹14800. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
40. 40.What amount will ₹27500 grow to in 2 years at 12% per year compound interest (in ₹)?

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