Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 831 · 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 ₹27500 at 8% per year for 2 years, compounded every year (in ₹).
2. 2.What is the difference between the compound interest and the simple interest on ₹34100 at 10% per year for 2 years (in ₹)?
3. 3.What amount will ₹26000 grow to in 3 years at 20% per year compound interest (in ₹)?
4. 4.A scooter is worth ₹14500. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹45600 at 15% per year for 2 years (in ₹)?
6. 6.Find the compound interest on ₹5000 at 12% per year for 2 years, compounded every year (in ₹).
7. 7.Find the compound interest on ₹21000 at 20% per year for 2 years, compounded every year (in ₹).
8. 8.Find the compound interest on ₹4000 at 15% per year for 1 year, compounded every year (in ₹).
9. 9.A scooter is worth ₹2500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
10. 10.A scooter is worth ₹44800. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
11. 11.Find the compound interest on ₹55500 at 20% per year for 1 year, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹34800 at 15% per year for 2 years (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹50000 at 12% per year for 2 years (in ₹)?
14. 14.What amount will ₹16200 grow to in 1 year at 5% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹37500 at 4% per year for 2 years, compounded every year (in ₹).
16. 16.Find the compound interest on ₹10000 at 8% per year for 2 years, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹29200 at 25% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹46800 at 5% per year for 2 years, compounded every year (in ₹).
19. 19.A scooter is worth ₹10000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
20. 20.Find the compound interest on ₹57600 at 25% per year for 3 years, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹42500 at 4% per year for 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹14400 at 15% per year for 2 years (in ₹)?
23. 23.A town has 40000 people. The population grows by 12% every year. What will the population be after 1 year?
24. 24.A scooter is worth ₹8000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
25. 25.A town has 5700 people. The population grows by 10% every year. What will the population be after 2 years?
26. 26.Find the compound interest on ₹18900 at 10% per year for 2 years, compounded every year (in ₹).
27. 27.A town has 16200 people. The population grows by 12% every year. What will the population be after 1 year?
28. 28.What is the difference between the compound interest and the simple interest on ₹19900 at 10% per year for 2 years (in ₹)?
29. 29.What amount will ₹15000 grow to in 1 year at 25% per year compound interest (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹32800 at 15% per year for 2 years (in ₹)?
31. 31.What amount will ₹11200 grow to in 3 years at 25% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹35000 at 8% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹5500 at 20% per year for 3 years, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹31600 at 15% per year for 2 years (in ₹)?
35. 35.A scooter is worth ₹4800. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
36. 36.Find the compound interest on ₹22900 at 4% per year for 1 year, compounded every year (in ₹).
37. 37.What amount will ₹5000 grow to in 1 year at 15% per year compound interest (in ₹)?
38. 38.A town has 37000 people. The population grows by 10% every year. What will the population be after 1 year?
39. 39.What amount will ₹14400 grow to in 2 years at 25% per year compound interest (in ₹)?
40. 40.What amount will ₹50500 grow to in 3 years at 20% per year compound interest (in ₹)?

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