Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 581 · 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 19900 people. The population grows by 4% every year. What will the population be after 1 year?
2. 2.What is the difference between the compound interest and the simple interest on ₹3600 at 5% per year for 2 years (in ₹)?
3. 3.What amount will ₹38600 grow to in 2 years at 20% per year compound interest (in ₹)?
4. 4.What amount will ₹23200 grow to in 2 years at 10% per year compound interest (in ₹)?
5. 5.Find the compound interest on ₹38200 at 10% per year for 2 years, compounded every year (in ₹).
6. 6.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
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.A town has 14700 people. The population grows by 10% every year. What will the population be after 1 year?
9. 9.A town has 49200 people. The population grows by 15% every year. What will the population be after 2 years?
10. 10.A scooter is worth ₹12800. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
11. 11.Find the compound interest on ₹32900 at 8% per year for 1 year, compounded every year (in ₹).
12. 12.A scooter is worth ₹12800. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
13. 13.What amount will ₹46500 grow to in 3 years at 20% per year compound interest (in ₹)?
14. 14.What amount will ₹27500 grow to in 2 years at 4% per year compound interest (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹22500 at 4% per year for 2 years (in ₹)?
16. 16.A scooter is worth ₹41700. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
17. 17.Find the compound interest on ₹50300 at 8% per year for 1 year, compounded every year (in ₹).
18. 18.What amount will ₹6000 grow to in 2 years at 25% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹42700 at 20% per year for 2 years, compounded every year (in ₹).
20. 20.What amount will ₹57400 grow to in 1 year at 5% per year compound interest (in ₹)?
21. 21.What amount will ₹21000 grow to in 1 year at 5% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹19400 at 20% per year for 1 year, compounded every year (in ₹).
23. 23.Find the compound interest on ₹18000 at 25% per year for 2 years, compounded every year (in ₹).
24. 24.What amount will ₹35200 grow to in 2 years at 15% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹35500 at 20% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹35100 at 25% per year for 1 year, compounded every year (in ₹).
27. 27.What amount will ₹27200 grow to in 1 year at 10% per year compound interest (in ₹)?
28. 28.Find the compound interest on ₹12500 at 4% per year for 2 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹47900 at 25% per year for 1 year, compounded every year (in ₹).
30. 30.What amount will ₹5000 grow to in 3 years at 10% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹59200 at 10% per year for 2 years (in ₹)?
32. 32.A town has 41200 people. The population grows by 15% every year. What will the population be after 2 years?
33. 33.What amount will ₹36900 grow to in 1 year at 8% per year compound interest (in ₹)?
34. 34.What amount will ₹27500 grow to in 2 years at 12% per year compound interest (in ₹)?
35. 35.A town has 32000 people. The population grows by 5% every year. What will the population be after 3 years?
36. 36.What is the difference between the compound interest and the simple interest on ₹51700 at 10% per year for 2 years (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 amount will ₹12500 grow to in 2 years at 12% per year compound interest (in ₹)?
39. 39.What amount will ₹41800 grow to in 1 year at 20% per year compound interest (in ₹)?
40. 40.What amount will ₹30000 grow to in 2 years at 4% per year compound interest (in ₹)?

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