Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 902 · 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 ₹45900 grow to in 2 years at 10% per year compound interest (in ₹)?
2. 2.Find the compound interest on ₹57600 at 4% per year for 1 year, compounded every year (in ₹).
3. 3.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
4. 4.Find the compound interest on ₹33100 at 15% per year for 1 year, compounded every year (in ₹).
5. 5.What is the difference between the compound interest and the simple interest on ₹11200 at 25% per year for 2 years (in ₹)?
6. 6.Find the compound interest on ₹28800 at 20% per year for 2 years, compounded every year (in ₹).
7. 7.Find the compound interest on ₹17500 at 4% per year for 2 years, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹47500 at 12% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹5000 at 8% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹11000 at 10% per year for 3 years, compounded every year (in ₹).
11. 11.Find the compound interest on ₹45100 at 15% per year for 1 year, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹4800 at 25% per year for 2 years (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹45000 at 8% per year for 2 years (in ₹)?
14. 14.A scooter is worth ₹55300. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
15. 15.Find the compound interest on ₹14400 at 5% per year for 2 years, compounded every year (in ₹).
16. 16.What amount will ₹42900 grow to in 1 year at 15% per year compound interest (in ₹)?
17. 17.A town has 8000 people. The population grows by 15% every year. What will the population be after 3 years?
18. 18.A town has 2900 people. The population grows by 15% every year. What will the population be after 1 year?
19. 19.Find the compound interest on ₹15000 at 12% per year for 2 years, compounded every year (in ₹).
20. 20.What amount will ₹29700 grow to in 2 years at 20% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹37500 at 10% per year for 2 years, compounded every year (in ₹).
22. 22.Find the compound interest on ₹1600 at 25% per year for 3 years, compounded every year (in ₹).
23. 23.Find the compound interest on ₹6700 at 5% per year for 1 year, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹22200 at 20% per year for 2 years (in ₹)?
25. 25.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
26. 26.What amount will ₹22500 grow to in 1 year at 25% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹34200 at 10% per year for 2 years, compounded every year (in ₹).
28. 28.Find the compound interest on ₹52000 at 5% per year for 2 years, compounded every year (in ₹).
29. 29.A town has 26000 people. The population grows by 20% every year. What will the population be after 2 years?
30. 30.What amount will ₹12700 grow to in 1 year at 25% per year compound interest (in ₹)?
31. 31.What amount will ₹55100 grow to in 1 year at 8% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹41700 at 10% per year for 1 year, compounded every year (in ₹).
33. 33.What amount will ₹27500 grow to in 1 year at 5% per year compound interest (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹2500 at 8% per year for 2 years (in ₹)?
35. 35.What amount will ₹24000 grow to in 1 year at 25% per year compound interest (in ₹)?
36. 36.What amount will ₹18000 grow to in 3 years at 20% per year compound interest (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹49600 at 5% per year for 2 years (in ₹)?
38. 38.A scooter is worth ₹32000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
39. 39.What amount will ₹25000 grow to in 2 years at 12% per year compound interest (in ₹)?
40. 40.A scooter is worth ₹16000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?

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