Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 603 · 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 ₹21300 at 10% per year for 1 year, compounded every year (in ₹).
2. 2.A scooter is worth ₹15000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹37500 at 8% per year for 2 years (in ₹)?
4. 4.A town has 39500 people. The population grows by 20% every year. What will the population be after 3 years?
5. 5.A scooter is worth ₹2600. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
6. 6.A town has 23800 people. The population grows by 12% every year. What will the population be after 1 year?
7. 7.Find the compound interest on ₹2400 at 10% per year for 2 years, compounded every year (in ₹).
8. 8.Find the compound interest on ₹49200 at 5% per year for 2 years, compounded every year (in ₹).
9. 9.What amount will ₹30300 grow to in 1 year at 10% per year compound interest (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹53200 at 25% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹48000 at 5% per year for 2 years, compounded every year (in ₹).
12. 12.What amount will ₹31300 grow to in 2 years at 10% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹49000 at 20% per year for 3 years, compounded every year (in ₹).
14. 14.Find the compound interest on ₹3500 at 5% per year for 1 year, compounded every year (in ₹).
15. 15.Find the compound interest on ₹6400 at 25% per year for 3 years, compounded every year (in ₹).
16. 16.Find the compound interest on ₹7100 at 10% per year for 2 years, compounded every year (in ₹).
17. 17.What amount will ₹16600 grow to in 1 year at 10% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹33700 at 10% per year for 2 years, compounded every year (in ₹).
19. 19.Find the compound interest on ₹58800 at 25% per year for 2 years, compounded every year (in ₹).
20. 20.A scooter is worth ₹10500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹36400 at 5% per year for 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹10900 at 10% per year for 2 years (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹57200 at 25% per year for 2 years (in ₹)?
24. 24.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
25. 25.A scooter is worth ₹43800. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
26. 26.Find the compound interest on ₹16400 at 10% per year for 1 year, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹17100 at 10% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹21500 at 20% per year for 3 years, compounded every year (in ₹).
29. 29.What is the difference between the compound interest and the simple interest on ₹57600 at 15% per year for 2 years (in ₹)?
30. 30.What amount will ₹39000 grow to in 3 years at 10% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹10000 at 4% per year for 2 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹35700 at 20% per year for 1 year, compounded every year (in ₹).
33. 33.Find the compound interest on ₹33600 at 15% per year for 1 year, compounded every year (in ₹).
34. 34.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
35. 35.A scooter is worth ₹50900. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
36. 36.What amount will ₹2300 grow to in 2 years at 20% per year compound interest (in ₹)?
37. 37.A scooter is worth ₹28800. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
38. 38.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
39. 39.Find the compound interest on ₹38500 at 8% per year for 1 year, compounded every year (in ₹).
40. 40.What amount will ₹12000 grow to in 2 years at 5% per year compound interest (in ₹)?

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