Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 569 · 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 12800 people. The population grows by 5% every year. What will the population be after 2 years?
2. 2.What is the difference between the compound interest and the simple interest on ₹52500 at 8% per year for 2 years (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹42500 at 4% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹28400 at 20% per year for 1 year, compounded every year (in ₹).
5. 5.What amount will ₹11800 grow to in 1 year at 15% per year compound interest (in ₹)?
6. 6.What amount will ₹53400 grow to in 1 year at 15% per year compound interest (in ₹)?
7. 7.A town has 13500 people. The population grows by 25% every year. What will the population be after 1 year?
8. 8.Find the compound interest on ₹43200 at 15% per year for 2 years, compounded every year (in ₹).
9. 9.A town has 16000 people. The population grows by 15% every year. What will the population be after 3 years?
10. 10.A scooter is worth ₹41500. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
11. 11.What amount will ₹8400 grow to in 1 year at 4% per year compound interest (in ₹)?
12. 12.Find the compound interest on ₹14000 at 5% per year for 2 years, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹19100 at 20% per year for 2 years (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹41300 at 20% per year for 2 years (in ₹)?
15. 15.A town has 12100 people. The population grows by 4% every year. What will the population be after 1 year?
16. 16.A scooter is worth ₹34000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
17. 17.Find the compound interest on ₹15700 at 12% per year for 1 year, compounded every year (in ₹).
18. 18.What amount will ₹27500 grow to in 2 years at 4% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹56400 at 25% per year for 2 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹27500 at 8% per year for 2 years (in ₹)?
21. 21.A scooter is worth ₹6700. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
22. 22.What amount will ₹14400 grow to in 2 years at 15% per year compound interest (in ₹)?
23. 23.What amount will ₹47600 grow to in 2 years at 25% per year compound interest (in ₹)?
24. 24.What amount will ₹24100 grow to in 2 years at 20% per year compound interest (in ₹)?
25. 25.Find the compound interest on ₹46800 at 15% per year for 2 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
27. 27.A scooter is worth ₹42300. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹45000 at 4% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹45200 at 10% per year for 1 year, compounded every year (in ₹).
31. 31.A scooter is worth ₹32000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹45000 at 8% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹22500 at 20% per year for 1 year, compounded every year (in ₹).
34. 34.What amount will ₹19000 grow to in 2 years at 10% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹59500 at 20% per year for 3 years, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹5200 at 25% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹7000 at 10% per year for 3 years, compounded every year (in ₹).
38. 38.What is the difference between the compound interest and the simple interest on ₹12500 at 12% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹50400 at 15% per year for 2 years, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹17500 at 8% per year for 2 years (in ₹)?

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