Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 326 · 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 ₹36400 at 5% per year for 2 years (in ₹)?
2. 2.A scooter is worth ₹40000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
3. 3.Find the compound interest on ₹24600 at 20% per year for 2 years, compounded every year (in ₹).
4. 4.What amount will ₹29200 grow to in 2 years at 15% per year compound interest (in ₹)?
5. 5.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
6. 6.A town has 7800 people. The population grows by 20% every year. What will the population be after 2 years?
7. 7.What is the difference between the compound interest and the simple interest on ₹7500 at 4% per year for 2 years (in ₹)?
8. 8.What amount will ₹17200 grow to in 2 years at 5% per year compound interest (in ₹)?
9. 9.A town has 56500 people. The population grows by 20% every year. What will the population be after 3 years?
10. 10.What is the difference between the compound interest and the simple interest on ₹11200 at 15% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹44900 at 10% per year for 1 year, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹9600 at 25% per year for 2 years (in ₹)?
13. 13.What amount will ₹28400 grow to in 2 years at 25% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹56000 at 5% per year for 2 years (in ₹)?
15. 15.Find the compound interest on ₹24000 at 15% per year for 3 years, compounded every year (in ₹).
16. 16.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
17. 17.A town has 34100 people. The population grows by 10% every year. What will the population be after 2 years?
18. 18.Find the compound interest on ₹46000 at 10% per year for 3 years, compounded every year (in ₹).
19. 19.A scooter is worth ₹8000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
20. 20.What amount will ₹22500 grow to in 2 years at 8% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹37000 at 10% per year for 3 years, compounded every year (in ₹).
22. 22.What amount will ₹32500 grow to in 2 years at 8% per year compound interest (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹40800 at 15% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹47500 at 8% per year for 2 years, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹43600 at 15% per year for 2 years (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹25800 at 20% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹40000 at 25% per year for 3 years, compounded every year (in ₹).
28. 28.What amount will ₹48400 grow to in 1 year at 25% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹19000 at 10% per year for 3 years, compounded every year (in ₹).
30. 30.Find the compound interest on ₹31000 at 10% per year for 3 years, compounded every year (in ₹).
31. 31.A town has 5800 people. The population grows by 8% every year. What will the population be after 1 year?
32. 32.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
33. 33.What amount will ₹15000 grow to in 2 years at 4% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹24000 at 15% per year for 2 years, compounded every year (in ₹).
35. 35.Find the compound interest on ₹45900 at 20% per year for 1 year, compounded every year (in ₹).
36. 36.Find the compound interest on ₹38000 at 15% per year for 2 years, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹40000 at 8% per year for 2 years (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹10000 at 12% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹30000 at 4% per year for 2 years, compounded every year (in ₹).
40. 40.Find the compound interest on ₹6100 at 20% per year for 1 year, compounded every year (in ₹).

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