Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 800 · 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 amount will ₹31600 grow to in 1 year at 15% per year compound interest (in ₹)?
2. 2.A scooter is worth ₹32900. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
3. 3.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
4. 4.Find the compound interest on ₹13600 at 20% per year for 2 years, compounded every year (in ₹).
5. 5.What is the difference between the compound interest and the simple interest on ₹42500 at 8% per year for 2 years (in ₹)?
6. 6.A town has 32000 people. The population grows by 15% every year. What will the population be after 3 years?
7. 7.A town has 35500 people. The population grows by 15% every year. What will the population be after 1 year?
8. 8.What amount will ₹40400 grow to in 2 years at 25% per year compound interest (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹8900 at 20% per year for 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹20000 at 12% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹54400 at 5% per year for 2 years, compounded every year (in ₹).
12. 12.Find the compound interest on ₹21300 at 25% per year for 1 year, compounded every year (in ₹).
13. 13.Find the compound interest on ₹57000 at 20% per year for 3 years, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹39200 at 5% per year for 2 years (in ₹)?
15. 15.What amount will ₹23600 grow to in 2 years at 5% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
17. 17.A town has 8000 people. The population grows by 5% every year. What will the population be after 3 years?
18. 18.What is the difference between the compound interest and the simple interest on ₹44800 at 5% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹47600 at 15% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹20400 at 20% per year for 1 year, compounded every year (in ₹).
21. 21.A town has 7600 people. The population grows by 25% every year. What will the population be after 1 year?
22. 22.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
23. 23.A scooter is worth ₹45400. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹45000 at 4% per year for 2 years (in ₹)?
25. 25.A scooter is worth ₹27500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
26. 26.A town has 38300 people. The population grows by 20% every year. What will the population be after 2 years?
27. 27.What is the difference between the compound interest and the simple interest on ₹55000 at 4% per year for 2 years (in ₹)?
28. 28.What amount will ₹4800 grow to in 3 years at 25% per year compound interest (in ₹)?
29. 29.What amount will ₹35000 grow to in 1 year at 25% per year compound interest (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹23200 at 25% per year for 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹18800 at 25% per year for 2 years (in ₹)?
32. 32.What amount will ₹33000 grow to in 1 year at 5% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹58000 at 5% per year for 2 years (in ₹)?
34. 34.What amount will ₹16800 grow to in 2 years at 10% per year compound interest (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹39600 at 5% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹50400 at 25% per year for 1 year, compounded every year (in ₹).
37. 37.Find the compound interest on ₹50400 at 15% per year for 1 year, compounded every year (in ₹).
38. 38.Find the compound interest on ₹38500 at 8% per year for 1 year, compounded every year (in ₹).
39. 39.A town has 40000 people. The population grows by 12% every year. What will the population be after 2 years?
40. 40.What is the difference between the compound interest and the simple interest on ₹4800 at 20% per year for 2 years (in ₹)?

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