Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 594 · 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 ₹58000 grow to in 3 years at 10% per year compound interest (in ₹)?
2. 2.A scooter is worth ₹10900. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
3. 3.What amount will ₹8100 grow to in 1 year at 5% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹16800 at 15% per year for 2 years, compounded every year (in ₹).
5. 5.Find the compound interest on ₹57500 at 4% per year for 2 years, compounded every year (in ₹).
6. 6.A scooter is worth ₹6000. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
7. 7.Find the compound interest on ₹54100 at 20% per year for 2 years, compounded every year (in ₹).
8. 8.Find the compound interest on ₹27900 at 4% per year for 1 year, compounded every year (in ₹).
9. 9.What amount will ₹54700 grow to in 1 year at 25% per year compound interest (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹59200 at 15% per year for 2 years (in ₹)?
11. 11.A scooter is worth ₹38000. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
12. 12.A scooter is worth ₹26900. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
13. 13.What amount will ₹7500 grow to in 2 years at 12% per year compound interest (in ₹)?
14. 14.What amount will ₹12100 grow to in 1 year at 20% per year compound interest (in ₹)?
15. 15.A scooter is worth ₹5600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
16. 16.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
17. 17.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
18. 18.Find the compound interest on ₹7500 at 4% per year for 2 years, compounded every year (in ₹).
19. 19.What amount will ₹56400 grow to in 2 years at 5% per year compound interest (in ₹)?
20. 20.What amount will ₹57500 grow to in 2 years at 4% per year compound interest (in ₹)?
21. 21.A town has 11600 people. The population grows by 8% every year. What will the population be after 1 year?
22. 22.A scooter is worth ₹48000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
23. 23.A town has 3100 people. The population grows by 20% every year. What will the population be after 1 year?
24. 24.What is the difference between the compound interest and the simple interest on ₹52800 at 20% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹35000 at 12% per year for 2 years (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹52500 at 4% per year for 2 years (in ₹)?
27. 27.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹30000 at 12% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹13600 at 25% per year for 2 years, compounded every year (in ₹).
30. 30.A scooter is worth ₹11200. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
31. 31.What amount will ₹59000 grow to in 3 years at 10% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹32200 at 20% per year for 2 years (in ₹)?
33. 33.What amount will ₹8500 grow to in 3 years at 20% per year compound interest (in ₹)?
34. 34.What amount will ₹40500 grow to in 1 year at 25% per year compound interest (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹28400 at 15% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹34300 at 4% per year for 1 year, compounded every year (in ₹).
37. 37.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
38. 38.A town has 5000 people. The population grows by 4% every year. What will the population be after 2 years?
39. 39.Find the compound interest on ₹6000 at 25% per year for 1 year, compounded every year (in ₹).
40. 40.A town has 60000 people. The population grows by 8% every year. What will the population be after 2 years?

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