Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 371 · 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 scooter is worth ₹33400. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹33700 at 10% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹16000 at 25% per year for 3 years, compounded every year (in ₹).
4. 4.Find the compound interest on ₹17000 at 20% per year for 3 years, compounded every year (in ₹).
5. 5.What is the difference between the compound interest and the simple interest on ₹30500 at 10% per year for 2 years (in ₹)?
6. 6.A scooter is worth ₹39000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
7. 7.Find the compound interest on ₹16500 at 20% per year for 3 years, compounded every year (in ₹).
8. 8.A town has 41200 people. The population grows by 5% every year. What will the population be after 2 years?
9. 9.Find the compound interest on ₹18000 at 5% per year for 2 years, compounded every year (in ₹).
10. 10.A town has 50000 people. The population grows by 12% every year. What will the population be after 2 years?
11. 11.Find the compound interest on ₹33700 at 12% per year for 1 year, compounded every year (in ₹).
12. 12.What amount will ₹17600 grow to in 2 years at 5% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹5000 at 10% per year for 3 years, compounded every year (in ₹).
14. 14.A town has 32700 people. The population grows by 5% every year. What will the population be after 1 year?
15. 15.What amount will ₹27500 grow to in 1 year at 20% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹57500 at 12% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹37600 at 25% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹35000 at 12% per year for 2 years, compounded every year (in ₹).
19. 19.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
20. 20.What is the difference between the compound interest and the simple interest on ₹22000 at 5% per year for 2 years (in ₹)?
21. 21.A town has 8600 people. The population grows by 10% every year. What will the population be after 1 year?
22. 22.Find the compound interest on ₹2800 at 25% per year for 2 years, compounded every year (in ₹).
23. 23.Find the compound interest on ₹42500 at 20% per year for 3 years, compounded every year (in ₹).
24. 24.A town has 56000 people. The population grows by 5% every year. What will the population be after 3 years?
25. 25.A scooter is worth ₹32000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
26. 26.Find the compound interest on ₹2500 at 8% per year for 2 years, compounded every year (in ₹).
27. 27.Find the compound interest on ₹53000 at 10% per year for 2 years, compounded every year (in ₹).
28. 28.Find the compound interest on ₹43600 at 25% per year for 2 years, compounded every year (in ₹).
29. 29.A scooter is worth ₹14900. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
30. 30.A town has 48200 people. The population grows by 15% every year. What will the population be after 1 year?
31. 31.A town has 30200 people. The population grows by 15% every year. What will the population be after 1 year?
32. 32.Find the compound interest on ₹9600 at 25% per year for 3 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹22500 at 12% per year for 2 years, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹8400 at 15% per year for 2 years (in ₹)?
35. 35.What amount will ₹12000 grow to in 2 years at 15% per year compound interest (in ₹)?
36. 36.What amount will ₹17900 grow to in 1 year at 20% per year compound interest (in ₹)?
37. 37.What amount will ₹5800 grow to in 2 years at 10% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹43200 at 25% per year for 3 years, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹3700 at 20% per year for 2 years (in ₹)?
40. 40.Find the compound interest on ₹55300 at 8% per year for 1 year, compounded every year (in ₹).

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