Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 712 · 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.Find the compound interest on ₹53000 at 10% per year for 3 years, compounded every year (in ₹).
2. 2.Find the compound interest on ₹32500 at 8% per year for 2 years, compounded every year (in ₹).
3. 3.What is the difference between the compound interest and the simple interest on ₹30000 at 5% per year for 2 years (in ₹)?
4. 4.What amount will ₹47100 grow to in 1 year at 12% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹20800 at 25% per year for 2 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹15000 at 12% per year for 2 years (in ₹)?
7. 7.A town has 17000 people. The population grows by 20% every year. What will the population be after 1 year?
8. 8.What amount will ₹29200 grow to in 2 years at 5% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹3500 at 20% per year for 1 year, compounded every year (in ₹).
10. 10.Find the compound interest on ₹32000 at 15% per year for 3 years, compounded every year (in ₹).
11. 11.What amount will ₹10100 grow to in 1 year at 20% per year compound interest (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹12500 at 4% per year for 2 years (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹14100 at 10% per year for 2 years (in ₹)?
14. 14.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
15. 15.What amount will ₹30800 grow to in 1 year at 10% per year compound interest (in ₹)?
16. 16.What amount will ₹51500 grow to in 3 years at 20% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹34500 at 8% per year for 1 year, compounded every year (in ₹).
18. 18.What amount will ₹51000 grow to in 1 year at 5% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹7700 at 12% per year for 1 year, compounded every year (in ₹).
20. 20.What amount will ₹25800 grow to in 1 year at 12% per year compound interest (in ₹)?
21. 21.What amount will ₹46800 grow to in 2 years at 15% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹56400 at 5% per year for 1 year, compounded every year (in ₹).
23. 23.What is the difference between the compound interest and the simple interest on ₹7100 at 10% per year for 2 years (in ₹)?
24. 24.What amount will ₹2500 grow to in 1 year at 25% per year compound interest (in ₹)?
25. 25.Find the compound interest on ₹20000 at 4% per year for 2 years, compounded every year (in ₹).
26. 26.What amount will ₹15000 grow to in 2 years at 4% per year compound interest (in ₹)?
27. 27.A scooter is worth ₹42800. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹55000 at 20% per year for 2 years (in ₹)?
29. 29.A scooter is worth ₹19600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
30. 30.Find the compound interest on ₹5900 at 12% per year for 1 year, compounded every year (in ₹).
31. 31.A scooter is worth ₹2500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
32. 32.Find the compound interest on ₹12900 at 4% per year for 1 year, compounded every year (in ₹).
33. 33.Find the compound interest on ₹23300 at 5% per year for 1 year, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹60000 at 8% per year for 2 years (in ₹)?
35. 35.What amount will ₹15000 grow to in 3 years at 10% per year compound interest (in ₹)?
36. 36.Find the compound interest on ₹7200 at 5% per year for 2 years, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹42200 at 20% per year for 2 years (in ₹)?
38. 38.What amount will ₹16400 grow to in 2 years at 5% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹45700 at 5% per year for 1 year, compounded every year (in ₹).
40. 40.Find the compound interest on ₹3000 at 10% per year for 3 years, compounded every year (in ₹).

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