Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 776 · 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 ₹6000 at 20% per year for 3 years, compounded every year (in ₹).
2. 2.What amount will ₹15600 grow to in 2 years at 15% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹25600 at 25% per year for 1 year, compounded every year (in ₹).
4. 4.Find the compound interest on ₹30400 at 5% per year for 2 years, compounded every year (in ₹).
5. 5.Find the compound interest on ₹42000 at 5% per year for 2 years, compounded every year (in ₹).
6. 6.What is the difference between the compound interest and the simple interest on ₹13600 at 25% per year for 2 years (in ₹)?
7. 7.What amount will ₹44300 grow to in 1 year at 4% per year compound interest (in ₹)?
8. 8.A scooter is worth ₹46800. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
9. 9.A town has 24000 people. The population grows by 5% every year. What will the population be after 3 years?
10. 10.A scooter is worth ₹26000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
11. 11.A scooter is worth ₹6400. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
12. 12.A town has 2000 people. The population grows by 10% every year. What will the population be after 3 years?
13. 13.What amount will ₹2100 grow to in 1 year at 12% per year compound interest (in ₹)?
14. 14.What amount will ₹55500 grow to in 1 year at 12% per year compound interest (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹22400 at 5% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹20400 at 25% per year for 2 years (in ₹)?
17. 17.What amount will ₹37500 grow to in 1 year at 5% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹24800 at 20% per year for 1 year, compounded every year (in ₹).
19. 19.What amount will ₹35200 grow to in 2 years at 5% per year compound interest (in ₹)?
20. 20.Find the compound interest on ₹7500 at 8% per year for 2 years, compounded every year (in ₹).
21. 21.Find the compound interest on ₹46000 at 20% per year for 3 years, compounded every year (in ₹).
22. 22.What amount will ₹43200 grow to in 1 year at 8% per year compound interest (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹11600 at 25% per year for 2 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹54800 at 15% per year for 2 years (in ₹)?
25. 25.What amount will ₹57200 grow to in 2 years at 25% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹50400 at 15% per year for 2 years, compounded every year (in ₹).
27. 27.Find the compound interest on ₹58300 at 20% per year for 2 years, compounded every year (in ₹).
28. 28.Find the compound interest on ₹34800 at 25% per year for 2 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
30. 30.What is the difference between the compound interest and the simple interest on ₹38000 at 5% per year for 2 years (in ₹)?
31. 31.Find the compound interest on ₹8000 at 25% per year for 3 years, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹16000 at 15% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹7500 at 4% per year for 2 years (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹3400 at 10% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹41400 at 10% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹46000 at 15% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹59200 at 5% per year for 2 years, compounded every year (in ₹).
38. 38.Find the compound interest on ₹52400 at 12% per year for 1 year, compounded every year (in ₹).
39. 39.Find the compound interest on ₹50000 at 4% per year for 2 years, compounded every year (in ₹).
40. 40.A town has 48400 people. The population grows by 25% every year. What will the population be after 2 years?

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