Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 322 · 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 ₹56000 grow to in 3 years at 20% per year compound interest (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹20600 at 20% per year for 2 years (in ₹)?
3. 3.A scooter is worth ₹35200. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
4. 4.A scooter is worth ₹35000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
5. 5.A town has 58300 people. The population grows by 8% every year. What will the population be after 1 year?
6. 6.What amount will ₹25000 grow to in 2 years at 4% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹51800 at 25% per year for 1 year, compounded every year (in ₹).
8. 8.Find the compound interest on ₹10000 at 4% per year for 2 years, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹11700 at 10% per year for 2 years (in ₹)?
10. 10.A town has 27000 people. The population grows by 10% every year. What will the population be after 3 years?
11. 11.What is the difference between the compound interest and the simple interest on ₹45200 at 15% per year for 2 years (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹10000 at 12% per year for 2 years (in ₹)?
13. 13.What amount will ₹41300 grow to in 1 year at 8% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹7600 at 12% per year for 1 year, compounded every year (in ₹).
15. 15.Find the compound interest on ₹26900 at 10% per year for 2 years, compounded every year (in ₹).
16. 16.Find the compound interest on ₹52400 at 15% per year for 2 years, compounded every year (in ₹).
17. 17.Find the compound interest on ₹44700 at 4% per year for 1 year, compounded every year (in ₹).
18. 18.What amount will ₹10600 grow to in 2 years at 10% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹20500 at 10% per year for 1 year, compounded every year (in ₹).
20. 20.A town has 19700 people. The population grows by 20% every year. What will the population be after 2 years?
21. 21.What amount will ₹12100 grow to in 2 years at 10% per year compound interest (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹42800 at 5% per year for 2 years (in ₹)?
23. 23.What amount will ₹7600 grow to in 2 years at 25% per year compound interest (in ₹)?
24. 24.A town has 56000 people. The population grows by 25% every year. What will the population be after 2 years?
25. 25.What amount will ₹36800 grow to in 3 years at 25% per year compound interest (in ₹)?
26. 26.A town has 56800 people. The population grows by 15% every year. What will the population be after 2 years?
27. 27.A scooter is worth ₹27500. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹40000 at 8% per year for 2 years (in ₹)?
29. 29.What amount will ₹16000 grow to in 3 years at 15% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹2400 at 20% per year for 2 years, compounded every year (in ₹).
31. 31.Find the compound interest on ₹33100 at 4% per year for 1 year, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹2800 at 5% per year for 2 years (in ₹)?
33. 33.What amount will ₹40400 grow to in 1 year at 8% per year compound interest (in ₹)?
34. 34.What amount will ₹13100 grow to in 2 years at 10% per year compound interest (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹14600 at 20% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹44000 at 15% per year for 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹20000 at 8% per year for 2 years (in ₹)?
38. 38.A scooter is worth ₹17900. Its value falls by 10% 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 ₹17200 at 15% per year for 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹22300 at 10% per year for 2 years (in ₹)?

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