Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 909 · 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 ₹54500 at 20% per year for 3 years, compounded every year (in ₹).
2. 2.What amount will ₹26800 grow to in 2 years at 25% per year compound interest (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹34400 at 5% per year for 2 years (in ₹)?
4. 4.A town has 16000 people. The population grows by 5% every year. What will the population be after 3 years?
5. 5.What amount will ₹31200 grow to in 2 years at 25% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
7. 7.What amount will ₹19800 grow to in 1 year at 10% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹17400 at 8% per year for 1 year, compounded every year (in ₹).
9. 9.What amount will ₹7500 grow to in 2 years at 8% per year compound interest (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹7200 at 5% per year for 2 years (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹8800 at 25% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹36400 at 25% per year for 2 years, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹39200 at 15% per year for 2 years (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹60000 at 12% per year for 2 years (in ₹)?
15. 15.A scooter is worth ₹21300. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
16. 16.What amount will ₹41000 grow to in 3 years at 10% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹27500 at 8% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹41000 at 20% per year for 3 years, compounded every year (in ₹).
19. 19.Find the compound interest on ₹52400 at 10% per year for 2 years, compounded every year (in ₹).
20. 20.What amount will ₹11200 grow to in 2 years at 25% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹26700 at 8% per year for 1 year, compounded every year (in ₹).
22. 22.What amount will ₹9200 grow to in 1 year at 8% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹5000 at 4% per year for 2 years, compounded every year (in ₹).
24. 24.What amount will ₹9400 grow to in 2 years at 20% per year compound interest (in ₹)?
25. 25.A scooter is worth ₹40000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
26. 26.What amount will ₹21200 grow to in 2 years at 5% per year compound interest (in ₹)?
27. 27.What amount will ₹19600 grow to in 2 years at 5% per year compound interest (in ₹)?
28. 28.Find the compound interest on ₹14700 at 8% per year for 1 year, compounded every year (in ₹).
29. 29.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
30. 30.A scooter is worth ₹32000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹27200 at 25% per year for 2 years (in ₹)?
32. 32.A scooter is worth ₹27500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
33. 33.What amount will ₹56000 grow to in 3 years at 15% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹18800 at 20% per year for 1 year, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹50800 at 10% per year for 2 years (in ₹)?
36. 36.What amount will ₹7400 grow to in 1 year at 5% per year compound interest (in ₹)?
37. 37.A town has 42500 people. The population grows by 12% every year. What will the population be after 2 years?
38. 38.Find the compound interest on ₹8100 at 25% per year for 1 year, compounded every year (in ₹).
39. 39.What amount will ₹9900 grow to in 2 years at 10% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹7600 at 10% per year for 2 years, compounded every year (in ₹).

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