Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 250 · 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 ₹40000 at 8% per year for 2 years, compounded every year (in ₹).
2. 2.A town has 57100 people. The population grows by 5% every year. What will the population be after 1 year?
3. 3.What amount will ₹50200 grow to in 1 year at 20% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹42500 at 10% per year for 2 years, compounded every year (in ₹).
5. 5.Find the compound interest on ₹13400 at 20% per year for 1 year, compounded every year (in ₹).
6. 6.Find the compound interest on ₹17500 at 4% per year for 2 years, compounded every year (in ₹).
7. 7.Find the compound interest on ₹22800 at 20% per year for 1 year, compounded every year (in ₹).
8. 8.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
9. 9.Find the compound interest on ₹24800 at 5% per year for 2 years, compounded every year (in ₹).
10. 10.Find the compound interest on ₹10000 at 4% per year for 2 years, compounded every year (in ₹).
11. 11.Find the compound interest on ₹28900 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 ₹27200 at 5% per year for 2 years (in ₹)?
13. 13.A town has 47500 people. The population grows by 4% every year. What will the population be after 2 years?
14. 14.What amount will ₹60000 grow to in 2 years at 12% per year compound interest (in ₹)?
15. 15.A town has 25000 people. The population grows by 12% every year. What will the population be after 2 years?
16. 16.What is the difference between the compound interest and the simple interest on ₹51300 at 10% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹3200 at 20% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹14000 at 15% per year for 1 year, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?
20. 20.A town has 34600 people. The population grows by 4% every year. What will the population be after 1 year?
21. 21.What amount will ₹45600 grow to in 2 years at 25% per year compound interest (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹17000 at 10% per year for 2 years (in ₹)?
23. 23.A scooter is worth ₹48800. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
24. 24.Find the compound interest on ₹43200 at 15% per year for 2 years, compounded every year (in ₹).
25. 25.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
26. 26.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹16000 at 5% per year for 2 years, compounded every year (in ₹).
28. 28.What is the difference between the compound interest and the simple interest on ₹25700 at 10% per year for 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹35900 at 10% per year for 2 years (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹10000 at 12% per year for 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹21100 at 20% per year for 2 years (in ₹)?
32. 32.A scooter is worth ₹4600. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
33. 33.A town has 12500 people. The population grows by 12% every year. What will the population be after 2 years?
34. 34.What is the difference between the compound interest and the simple interest on ₹60000 at 4% per year for 2 years (in ₹)?
35. 35.What amount will ₹5000 grow to in 2 years at 12% per year compound interest (in ₹)?
36. 36.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
37. 37.A town has 16000 people. The population grows by 5% every year. What will the population be after 3 years?
38. 38.What is the difference between the compound interest and the simple interest on ₹44800 at 5% per year for 2 years (in ₹)?
39. 39.A scooter is worth ₹40000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
40. 40.A scooter is worth ₹39600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?

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