Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 83 · 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.A town has 6800 people. The population grows by 10% every year. What will the population be after 2 years?
2. 2.Find the compound interest on ₹45000 at 12% per year for 2 years, compounded every year (in ₹).
3. 3.Find the compound interest on ₹24300 at 12% per year for 1 year, compounded every year (in ₹).
4. 4.Find the compound interest on ₹3400 at 5% per year for 1 year, compounded every year (in ₹).
5. 5.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?
7. 7.Find the compound interest on ₹43600 at 15% per year for 2 years, compounded every year (in ₹).
8. 8.A town has 15000 people. The population grows by 12% every year. What will the population be after 2 years?
9. 9.A town has 13600 people. The population grows by 5% every year. What will the population be after 2 years?
10. 10.A town has 47500 people. The population grows by 12% every year. What will the population be after 2 years?
11. 11.Find the compound interest on ₹42900 at 20% per year for 2 years, compounded every year (in ₹).
12. 12.Find the compound interest on ₹6700 at 25% per year for 1 year, compounded every year (in ₹).
13. 13.A town has 9900 people. The population grows by 20% every year. What will the population be after 1 year?
14. 14.A scooter is worth ₹24000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹7600 at 25% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹32500 at 8% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹5000 at 8% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹32500 at 4% per year for 2 years, compounded every year (in ₹).
19. 19.What amount will ₹50300 grow to in 1 year at 15% per year compound interest (in ₹)?
20. 20.Find the compound interest on ₹25000 at 4% per year for 2 years, compounded every year (in ₹).
21. 21.What amount will ₹4000 grow to in 2 years at 5% per year compound interest (in ₹)?
22. 22.What amount will ₹51200 grow to in 3 years at 25% per year compound interest (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹18400 at 15% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹16000 at 15% per year for 1 year, compounded every year (in ₹).
25. 25.Find the compound interest on ₹55800 at 15% per year for 1 year, compounded every year (in ₹).
26. 26.A scooter is worth ₹49600. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
27. 27.Find the compound interest on ₹46100 at 20% per year for 1 year, compounded every year (in ₹).
28. 28.What is the difference between the compound interest and the simple interest on ₹47500 at 12% per year for 2 years (in ₹)?
29. 29.What amount will ₹24100 grow to in 1 year at 25% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹52600 at 15% per year for 1 year, compounded every year (in ₹).
31. 31.What is the difference between the compound interest and the simple interest on ₹27500 at 8% per year for 2 years (in ₹)?
32. 32.Find the compound interest on ₹40000 at 5% per year for 2 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹6300 at 20% per year for 1 year, compounded every year (in ₹).
34. 34.Find the compound interest on ₹39200 at 5% per year for 2 years, compounded every year (in ₹).
35. 35.Find the compound interest on ₹12500 at 4% per year for 2 years, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹25000 at 12% per year for 2 years (in ₹)?
37. 37.What amount will ₹16000 grow to in 3 years at 25% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹50500 at 20% per year for 2 years, compounded every year (in ₹).
39. 39.A scooter is worth ₹57500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹57500 at 8% per year for 2 years (in ₹)?

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