Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 446 · 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 amount will ₹11500 grow to in 3 years at 20% per year compound interest (in ₹)?
2. 2.Find the compound interest on ₹23200 at 5% per year for 2 years, compounded every year (in ₹).
3. 3.What is the difference between the compound interest and the simple interest on ₹52500 at 4% per year for 2 years (in ₹)?
4. 4.What amount will ₹10000 grow to in 2 years at 8% per year compound interest (in ₹)?
5. 5.A town has 43200 people. The population grows by 15% every year. What will the population be after 1 year?
6. 6.What is the difference between the compound interest and the simple interest on ₹59300 at 10% per year for 2 years (in ₹)?
7. 7.What amount will ₹19100 grow to in 1 year at 20% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹59300 at 15% per year for 1 year, compounded every year (in ₹).
9. 9.Find the compound interest on ₹39000 at 10% per year for 3 years, compounded every year (in ₹).
10. 10.What is the difference between the compound interest and the simple interest on ₹32500 at 12% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹33100 at 10% per year for 2 years, compounded every year (in ₹).
12. 12.A town has 54100 people. The population grows by 10% every year. What will the population be after 2 years?
13. 13.A town has 8600 people. The population grows by 25% every year. What will the population be after 1 year?
14. 14.What amount will ₹55600 grow to in 1 year at 20% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹11100 at 10% per year for 1 year, compounded every year (in ₹).
16. 16.What amount will ₹3700 grow to in 1 year at 15% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹21600 at 5% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹16400 at 10% per year for 2 years, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹24300 at 10% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹6000 at 20% per year for 3 years, compounded every year (in ₹).
21. 21.A town has 28400 people. The population grows by 12% every year. What will the population be after 1 year?
22. 22.A scooter is worth ₹45000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
23. 23.A scooter is worth ₹23000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹56900 at 20% per year for 2 years (in ₹)?
25. 25.What amount will ₹47500 grow to in 3 years at 20% per year compound interest (in ₹)?
26. 26.What amount will ₹41600 grow to in 3 years at 25% per year compound interest (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹57500 at 4% per year for 2 years (in ₹)?
28. 28.What amount will ₹40000 grow to in 2 years at 8% per year compound interest (in ₹)?
29. 29.What amount will ₹46000 grow to in 3 years at 10% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹12500 at 8% per year for 2 years, compounded every year (in ₹).
31. 31.Find the compound interest on ₹39700 at 20% per year for 1 year, compounded every year (in ₹).
32. 32.Find the compound interest on ₹53200 at 15% per year for 2 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹23000 at 20% per year for 2 years, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹21600 at 25% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹40000 at 5% per year for 1 year, compounded every year (in ₹).
37. 37.What amount will ₹12400 grow to in 2 years at 25% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹55400 at 8% per year for 1 year, compounded every year (in ₹).
39. 39.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
40. 40.A scooter is worth ₹20300. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?

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