Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 707 · 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 ₹7200 at 5% per year for 2 years, compounded every year (in ₹).
2. 2.What amount will ₹10000 grow to in 2 years at 8% per year compound interest (in ₹)?
3. 3.A scooter is worth ₹20400. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
4. 4.Find the compound interest on ₹37100 at 10% per year for 2 years, compounded every year (in ₹).
5. 5.What amount will ₹35400 grow to in 1 year at 5% per year compound interest (in ₹)?
6. 6.A town has 4000 people. The population grows by 10% every year. What will the population be after 3 years?
7. 7.A scooter is worth ₹39200. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹52800 at 5% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹49600 at 15% per year for 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹29300 at 20% per year for 2 years (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹46400 at 5% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹6500 at 20% per year for 3 years, compounded every year (in ₹).
13. 13.A town has 12500 people. The population grows by 8% every year. What will the population be after 2 years?
14. 14.Find the compound interest on ₹47500 at 4% per year for 2 years, compounded every year (in ₹).
15. 15.A town has 9600 people. The population grows by 25% every year. What will the population be after 3 years?
16. 16.Find the compound interest on ₹20200 at 20% per year for 2 years, compounded every year (in ₹).
17. 17.What amount will ₹59100 grow to in 1 year at 20% per year compound interest (in ₹)?
18. 18.What amount will ₹42000 grow to in 3 years at 10% per year compound interest (in ₹)?
19. 19.What amount will ₹54800 grow to in 2 years at 5% per year compound interest (in ₹)?
20. 20.A scooter is worth ₹28100. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
21. 21.What amount will ₹27200 grow to in 2 years at 5% per year compound interest (in ₹)?
22. 22.A scooter is worth ₹51800. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹47500 at 8% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹53400 at 15% per year for 1 year, compounded every year (in ₹).
25. 25.A town has 16000 people. The population grows by 15% every year. What will the population be after 3 years?
26. 26.Find the compound interest on ₹11000 at 20% per year for 3 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹50800 at 25% per year for 2 years (in ₹)?
28. 28.What amount will ₹3800 grow to in 1 year at 20% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹32000 at 25% per year for 3 years, compounded every year (in ₹).
30. 30.Find the compound interest on ₹45000 at 20% per year for 3 years, compounded every year (in ₹).
31. 31.What is the difference between the compound interest and the simple interest on ₹15600 at 10% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹48400 at 25% per year for 2 years (in ₹)?
33. 33.What amount will ₹31000 grow to in 3 years at 10% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹11800 at 5% per year for 1 year, compounded every year (in ₹).
35. 35.What amount will ₹16400 grow to in 2 years at 10% per year compound interest (in ₹)?
36. 36.What amount will ₹21600 grow to in 2 years at 5% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹28900 at 10% per year for 2 years, compounded every year (in ₹).
38. 38.What is the difference between the compound interest and the simple interest on ₹36500 at 10% per year for 2 years (in ₹)?
39. 39.What amount will ₹2500 grow to in 2 years at 4% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹24000 at 5% per year for 2 years (in ₹)?

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