Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 293 · 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 ₹56000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹50100 at 20% per year for 2 years (in ₹)?
3. 3.A scooter is worth ₹40600. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
4. 4.Find the compound interest on ₹24400 at 15% per year for 2 years, compounded every year (in ₹).
5. 5.What amount will ₹10600 grow to in 1 year at 8% per year compound interest (in ₹)?
6. 6.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
7. 7.A town has 30700 people. The population grows by 10% every year. What will the population be after 1 year?
8. 8.A scooter is worth ₹28400. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
9. 9.A town has 20000 people. The population grows by 8% every year. What will the population be after 2 years?
10. 10.Find the compound interest on ₹50700 at 15% per year for 1 year, compounded every year (in ₹).
11. 11.Find the compound interest on ₹6400 at 4% per year for 1 year, compounded every year (in ₹).
12. 12.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
13. 13.What amount will ₹2000 grow to in 2 years at 15% per year compound interest (in ₹)?
14. 14.A town has 45600 people. The population grows by 4% every year. What will the population be after 1 year?
15. 15.What amount will ₹9000 grow to in 1 year at 4% per year compound interest (in ₹)?
16. 16.A town has 23000 people. The population grows by 20% every year. What will the population be after 1 year?
17. 17.What amount will ₹27600 grow to in 2 years at 25% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹25600 at 5% per year for 2 years (in ₹)?
19. 19.A scooter is worth ₹7500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
20. 20.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹11200 at 5% per year for 2 years (in ₹)?
22. 22.Find the compound interest on ₹5000 at 12% per year for 2 years, compounded every year (in ₹).
23. 23.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹10400 at 5% per year for 2 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹30000 at 8% per year for 2 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹34000 at 5% per year for 2 years, compounded every year (in ₹).
27. 27.A scooter is worth ₹18800. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
28. 28.What amount will ₹30400 grow to in 3 years at 25% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹5200 at 25% per year for 2 years (in ₹)?
30. 30.What amount will ₹4600 grow to in 1 year at 10% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹32500 at 4% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹15000 at 4% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹12700 at 20% per year for 1 year, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹8400 at 15% per year for 2 years (in ₹)?
35. 35.Find the compound interest on ₹12300 at 20% per year for 2 years, compounded every year (in ₹).
36. 36.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
37. 37.What amount will ₹47400 grow to in 2 years at 10% per year compound interest (in ₹)?
38. 38.What amount will ₹9200 grow to in 1 year at 20% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹55600 at 4% per year for 1 year, compounded every year (in ₹).
40. 40.Find the compound interest on ₹51000 at 4% per year for 1 year, compounded every year (in ₹).

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