Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 377 · 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.Find the compound interest on ₹54200 at 12% per year for 1 year, compounded every year (in ₹).
2. 2.A town has 16500 people. The population grows by 5% every year. What will the population be after 1 year?
3. 3.What is the difference between the compound interest and the simple interest on ₹36000 at 5% per year for 2 years (in ₹)?
4. 4.What amount will ₹23600 grow to in 2 years at 25% per year compound interest (in ₹)?
5. 5.A scooter is worth ₹20000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
6. 6.A scooter is worth ₹54900. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
7. 7.A town has 20000 people. The population grows by 8% every year. What will the population be after 1 year?
8. 8.Find the compound interest on ₹58300 at 5% per year for 1 year, compounded every year (in ₹).
9. 9.Find the compound interest on ₹44800 at 25% per year for 2 years, compounded every year (in ₹).
10. 10.A scooter is worth ₹16700. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
11. 11.A scooter is worth ₹40000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹9100 at 20% per year for 2 years (in ₹)?
13. 13.What amount will ₹32500 grow to in 1 year at 5% per year compound interest (in ₹)?
14. 14.What amount will ₹37300 grow to in 1 year at 4% per year compound interest (in ₹)?
15. 15.What amount will ₹42000 grow to in 3 years at 10% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹18700 at 4% per year for 1 year, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹25000 at 8% per year for 2 years (in ₹)?
18. 18.A scooter is worth ₹35000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
19. 19.What amount will ₹39600 grow to in 1 year at 25% per year compound interest (in ₹)?
20. 20.Find the compound interest on ₹10300 at 20% per year for 2 years, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹55000 at 12% per year for 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹50000 at 8% per year for 2 years (in ₹)?
23. 23.A scooter is worth ₹2400. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
24. 24.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
25. 25.What amount will ₹24400 grow to in 1 year at 4% per year compound interest (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹28700 at 20% per year for 2 years (in ₹)?
27. 27.A town has 7000 people. The population grows by 12% every year. What will the population be after 1 year?
28. 28.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹59700 at 10% per year for 1 year, compounded every year (in ₹).
30. 30.What amount will ₹30100 grow to in 1 year at 5% per year compound interest (in ₹)?
31. 31.What amount will ₹11000 grow to in 3 years at 10% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹57300 at 20% per year for 1 year, compounded every year (in ₹).
33. 33.A town has 50900 people. The population grows by 20% every year. What will the population be after 2 years?
34. 34.What amount will ₹33000 grow to in 3 years at 10% per year compound interest (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹40000 at 5% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹26400 at 15% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹45000 at 10% per year for 3 years, compounded every year (in ₹).
38. 38.Find the compound interest on ₹24200 at 10% per year for 1 year, compounded every year (in ₹).
39. 39.A scooter is worth ₹33000. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
40. 40.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).

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