Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 120 · 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 ₹12500. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹2800 at 20% per year for 2 years (in ₹)?
3. 3.What amount will ₹34300 grow to in 1 year at 5% per year compound interest (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹10500 at 10% per year for 2 years (in ₹)?
5. 5.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹47500 at 8% per year for 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹12400 at 25% per year for 2 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹12500 at 12% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹51700 at 8% per year for 1 year, compounded every year (in ₹).
10. 10.A town has 40400 people. The population grows by 20% every year. What will the population be after 2 years?
11. 11.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
12. 12.What amount will ₹5800 grow to in 1 year at 20% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹21200 at 25% per year for 2 years, compounded every year (in ₹).
14. 14.What amount will ₹24800 grow to in 2 years at 15% per year compound interest (in ₹)?
15. 15.What amount will ₹22500 grow to in 2 years at 4% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹21800 at 25% per year for 1 year, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹24400 at 15% per year for 2 years (in ₹)?
18. 18.A town has 14800 people. The population grows by 15% every year. What will the population be after 2 years?
19. 19.What amount will ₹37500 grow to in 2 years at 4% per year compound interest (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹19500 at 10% per year for 2 years (in ₹)?
21. 21.What amount will ₹26000 grow to in 2 years at 5% per year compound interest (in ₹)?
22. 22.What amount will ₹9100 grow to in 1 year at 20% per year compound interest (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹32500 at 8% per year for 2 years (in ₹)?
24. 24.A town has 27500 people. The population grows by 8% every year. What will the population be after 2 years?
25. 25.What is the difference between the compound interest and the simple interest on ₹55000 at 4% per year for 2 years (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹18400 at 25% per year for 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹43300 at 10% per year for 2 years (in ₹)?
28. 28.What amount will ₹17800 grow to in 1 year at 25% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹20400 at 5% per year for 2 years (in ₹)?
30. 30.What amount will ₹16000 grow to in 3 years at 15% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹42000 at 15% per year for 2 years (in ₹)?
32. 32.A town has 47200 people. The population grows by 25% every year. What will the population be after 2 years?
33. 33.What is the difference between the compound interest and the simple interest on ₹3600 at 25% per year for 2 years (in ₹)?
34. 34.A town has 8000 people. The population grows by 25% every year. What will the population be after 3 years?
35. 35.Find the compound interest on ₹15800 at 4% per year for 1 year, compounded every year (in ₹).
36. 36.Find the compound interest on ₹30000 at 12% per year for 2 years, compounded every year (in ₹).
37. 37.What amount will ₹48000 grow to in 3 years at 15% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹29100 at 20% per year for 2 years (in ₹)?
39. 39.What amount will ₹26900 grow to in 1 year at 15% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹22000 at 5% per year for 2 years, compounded every year (in ₹).

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