Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 267 · 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 ₹2500 at 8% per year for 2 years, compounded every year (in ₹).
2. 2.A town has 18900 people. The population grows by 10% every year. What will the population be after 2 years?
3. 3.Find the compound interest on ₹45500 at 10% per year for 1 year, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹33800 at 10% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹10000 at 8% per year for 2 years, compounded every year (in ₹).
6. 6.What amount will ₹10000 grow to in 2 years at 4% per year compound interest (in ₹)?
7. 7.What amount will ₹26400 grow to in 2 years at 15% per year compound interest (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹45600 at 5% per year for 2 years (in ₹)?
9. 9.What amount will ₹57300 grow to in 1 year at 4% per year compound interest (in ₹)?
10. 10.A town has 19200 people. The population grows by 25% every year. What will the population be after 3 years?
11. 11.Find the compound interest on ₹48600 at 15% per year for 1 year, compounded every year (in ₹).
12. 12.A town has 10000 people. The population grows by 12% every year. What will the population be after 2 years?
13. 13.What is the difference between the compound interest and the simple interest on ₹58400 at 25% per year for 2 years (in ₹)?
14. 14.A scooter is worth ₹50500. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
15. 15.Find the compound interest on ₹8000 at 5% per year for 2 years, compounded every year (in ₹).
16. 16.A scooter is worth ₹31200. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
17. 17.A scooter is worth ₹59800. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
18. 18.Find the compound interest on ₹45000 at 10% per year for 3 years, compounded every year (in ₹).
19. 19.Find the compound interest on ₹52500 at 4% per year for 2 years, compounded every year (in ₹).
20. 20.A town has 15000 people. The population grows by 4% every year. What will the population be after 2 years?
21. 21.A scooter is worth ₹44900. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹42500 at 8% per year for 2 years (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹7300 at 10% per year for 2 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹16600 at 20% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹25000 at 4% per year for 2 years, compounded every year (in ₹).
27. 27.Find the compound interest on ₹41900 at 12% per year for 1 year, compounded every year (in ₹).
28. 28.Find the compound interest on ₹17500 at 10% per year for 2 years, compounded every year (in ₹).
29. 29.What amount will ₹11200 grow to in 3 years at 25% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹59200 at 25% per year for 3 years, compounded every year (in ₹).
31. 31.What is the difference between the compound interest and the simple interest on ₹15200 at 15% per year for 2 years (in ₹)?
32. 32.A town has 32000 people. The population grows by 15% every year. What will the population be after 3 years?
33. 33.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
34. 34.Find the compound interest on ₹35400 at 8% per year for 1 year, compounded every year (in ₹).
35. 35.What amount will ₹39400 grow to in 1 year at 5% per year compound interest (in ₹)?
36. 36.Find the compound interest on ₹22500 at 20% per year for 3 years, compounded every year (in ₹).
37. 37.What amount will ₹31300 grow to in 1 year at 10% per year compound interest (in ₹)?
38. 38.A scooter is worth ₹2400. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹44000 at 10% per year for 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹35900 at 10% per year for 2 years (in ₹)?

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