Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 749 · 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.A scooter is worth ₹25800. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
2. 2.What amount will ₹42800 grow to in 2 years at 5% per year compound interest (in ₹)?
3. 3.What amount will ₹39100 grow to in 1 year at 10% per year compound interest (in ₹)?
4. 4.What amount will ₹35000 grow to in 2 years at 12% per year compound interest (in ₹)?
5. 5.What amount will ₹30000 grow to in 2 years at 4% per year compound interest (in ₹)?
6. 6.A scooter is worth ₹27600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
7. 7.Find the compound interest on ₹16000 at 10% per year for 3 years, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹6500 at 10% per year for 2 years (in ₹)?
9. 9.What amount will ₹13400 grow to in 2 years at 10% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹2600 at 5% per year for 1 year, compounded every year (in ₹).
11. 11.What amount will ₹35600 grow to in 2 years at 15% per year compound interest (in ₹)?
12. 12.A scooter is worth ₹38200. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
13. 13.What amount will ₹23400 grow to in 1 year at 25% per year compound interest (in ₹)?
14. 14.A town has 10800 people. The population grows by 25% every year. What will the population be after 1 year?
15. 15.What is the difference between the compound interest and the simple interest on ₹56000 at 20% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹22500 at 8% per year for 2 years (in ₹)?
17. 17.A scooter is worth ₹13600. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹32500 at 8% per year for 2 years (in ₹)?
19. 19.A town has 12800 people. The population grows by 25% every year. What will the population be after 2 years?
20. 20.What is the difference between the compound interest and the simple interest on ₹24000 at 25% per year for 2 years (in ₹)?
21. 21.What amount will ₹41200 grow to in 1 year at 20% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹57200 at 20% per year for 1 year, compounded every year (in ₹).
23. 23.What amount will ₹24000 grow to in 3 years at 20% per year compound interest (in ₹)?
24. 24.What amount will ₹17200 grow to in 1 year at 15% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹31700 at 10% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
27. 27.What amount will ₹60000 grow to in 2 years at 12% per year compound interest (in ₹)?
28. 28.Find the compound interest on ₹11800 at 5% per year for 1 year, compounded every year (in ₹).
29. 29.A town has 30200 people. The population grows by 4% every year. What will the population be after 1 year?
30. 30.Find the compound interest on ₹13600 at 4% per year for 1 year, compounded every year (in ₹).
31. 31.What amount will ₹35900 grow to in 1 year at 8% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹57500 at 25% per year for 1 year, compounded every year (in ₹).
33. 33.Find the compound interest on ₹11200 at 15% per year for 2 years, compounded every year (in ₹).
34. 34.What amount will ₹4000 grow to in 3 years at 20% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹38400 at 8% per year for 1 year, compounded every year (in ₹).
36. 36.Find the compound interest on ₹51400 at 10% per year for 2 years, compounded every year (in ₹).
37. 37.A town has 42200 people. The population grows by 20% every year. What will the population be after 1 year?
38. 38.A town has 49100 people. The population grows by 8% every year. What will the population be after 1 year?
39. 39.A scooter is worth ₹2800. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
40. 40.A scooter is worth ₹22300. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?

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