Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 946 · 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 ₹8000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
2. 2.Find the compound interest on ₹8300 at 20% per year for 2 years, compounded every year (in ₹).
3. 3.Find the compound interest on ₹17000 at 10% per year for 1 year, compounded every year (in ₹).
4. 4.What amount will ₹50300 grow to in 2 years at 10% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹40400 at 5% per year for 2 years (in ₹)?
6. 6.What amount will ₹32500 grow to in 1 year at 10% per year compound interest (in ₹)?
7. 7.A town has 27600 people. The population grows by 4% every year. What will the population be after 1 year?
8. 8.Find the compound interest on ₹11200 at 25% per year for 2 years, compounded every year (in ₹).
9. 9.A scooter is worth ₹7500. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
10. 10.What amount will ₹44800 grow to in 3 years at 25% per year compound interest (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹20000 at 12% per year for 2 years (in ₹)?
12. 12.A town has 56600 people. The population grows by 15% every year. What will the population be after 1 year?
13. 13.A scooter is worth ₹50500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹15000 at 4% per year for 2 years (in ₹)?
15. 15.A town has 27400 people. The population grows by 8% every year. What will the population be after 1 year?
16. 16.Find the compound interest on ₹23000 at 10% per year for 3 years, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹40000 at 15% per year for 2 years (in ₹)?
18. 18.A town has 44400 people. The population grows by 8% every year. What will the population be after 1 year?
19. 19.Find the compound interest on ₹35700 at 5% per year for 1 year, compounded every year (in ₹).
20. 20.What amount will ₹26300 grow to in 1 year at 10% per year compound interest (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹53600 at 5% per year for 2 years (in ₹)?
22. 22.Find the compound interest on ₹6600 at 20% per year for 1 year, compounded every year (in ₹).
23. 23.A scooter is worth ₹49500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
24. 24.Find the compound interest on ₹30400 at 25% per year for 2 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹42500 at 12% per year for 2 years, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹30000 at 25% per year for 2 years (in ₹)?
27. 27.A scooter is worth ₹17600. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
28. 28.A town has 18000 people. The population grows by 10% every year. What will the population be after 3 years?
29. 29.What amount will ₹38400 grow to in 1 year at 10% per year compound interest (in ₹)?
30. 30.What amount will ₹43800 grow to in 1 year at 10% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹23500 at 10% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹22500 at 8% per year for 2 years (in ₹)?
33. 33.A town has 47900 people. The population grows by 15% every year. What will the population be after 1 year?
34. 34.Find the compound interest on ₹30400 at 25% per year for 3 years, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹26000 at 25% per year for 2 years (in ₹)?
36. 36.What amount will ₹47200 grow to in 2 years at 25% per year compound interest (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹5000 at 4% per year for 2 years (in ₹)?
40. 40.A town has 15500 people. The population grows by 20% every year. What will the population be after 1 year?

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