Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 128 · 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 is the difference between the compound interest and the simple interest on ₹29600 at 5% per year for 2 years (in ₹)?
2. 2.A town has 5800 people. The population grows by 12% every year. What will the population be after 1 year?
3. 3.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
4. 4.What amount will ₹42900 grow to in 1 year at 10% per year compound interest (in ₹)?
5. 5.A scooter is worth ₹39400. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
6. 6.A scooter is worth ₹24000. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
7. 7.What amount will ₹36700 grow to in 2 years at 20% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹24000 at 15% per year for 3 years, compounded every year (in ₹).
9. 9.A town has 37400 people. The population grows by 20% every year. What will the population be after 1 year?
10. 10.What is the difference between the compound interest and the simple interest on ₹6500 at 10% per year for 2 years (in ₹)?
11. 11.A scooter is worth ₹8000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹55000 at 8% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹51700 at 15% per year for 1 year, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹33200 at 20% per year for 2 years (in ₹)?
15. 15.A scooter is worth ₹44900. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
16. 16.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
17. 17.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
18. 18.A town has 12800 people. The population grows by 15% every year. What will the population be after 2 years?
19. 19.A scooter is worth ₹45600. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
20. 20.Find the compound interest on ₹14400 at 25% per year for 2 years, compounded every year (in ₹).
21. 21.What amount will ₹11900 grow to in 1 year at 10% per year compound interest (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹53600 at 25% per year for 2 years (in ₹)?
23. 23.A scooter is worth ₹30500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
24. 24.A scooter is worth ₹46400. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
25. 25.Find the compound interest on ₹56000 at 10% per year for 3 years, compounded every year (in ₹).
26. 26.What amount will ₹9200 grow to in 1 year at 4% per year compound interest (in ₹)?
27. 27.What amount will ₹32800 grow to in 2 years at 20% per year compound interest (in ₹)?
28. 28.What amount will ₹17700 grow to in 2 years at 20% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹41600 at 10% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹27900 at 10% per year for 1 year, compounded every year (in ₹).
31. 31.What is the difference between the compound interest and the simple interest on ₹12500 at 4% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹59600 at 15% per year for 2 years (in ₹)?
33. 33.A scooter is worth ₹47500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹15000 at 4% per year for 2 years (in ₹)?
35. 35.What amount will ₹49200 grow to in 2 years at 5% per year compound interest (in ₹)?
36. 36.What amount will ₹42500 grow to in 2 years at 8% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹47700 at 12% per year for 1 year, compounded every year (in ₹).
38. 38.Find the compound interest on ₹17500 at 8% per year for 2 years, compounded every year (in ₹).
39. 39.What amount will ₹12500 grow to in 2 years at 8% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).

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