Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 614 · 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 ₹40000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
2. 2.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹18000 at 10% per year for 1 year, compounded every year (in ₹).
4. 4.What amount will ₹50900 grow to in 1 year at 25% per year compound interest (in ₹)?
5. 5.Find the compound interest on ₹31000 at 10% per year for 3 years, compounded every year (in ₹).
6. 6.A town has 59200 people. The population grows by 25% every year. What will the population be after 3 years?
7. 7.What is the difference between the compound interest and the simple interest on ₹10000 at 8% per year for 2 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹10800 at 5% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹8300 at 20% per year for 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹19600 at 25% per year for 2 years (in ₹)?
11. 11.What amount will ₹5600 grow to in 2 years at 25% per year compound interest (in ₹)?
12. 12.Find the compound interest on ₹27200 at 25% per year for 3 years, compounded every year (in ₹).
13. 13.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹32000 at 25% per year for 1 year, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹32500 at 4% per year for 2 years (in ₹)?
16. 16.A scooter is worth ₹57500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
17. 17.Find the compound interest on ₹46000 at 10% per year for 3 years, compounded every year (in ₹).
18. 18.Find the compound interest on ₹39100 at 25% per year for 1 year, compounded every year (in ₹).
19. 19.What amount will ₹51600 grow to in 2 years at 10% per year compound interest (in ₹)?
20. 20.A town has 7300 people. The population grows by 15% every year. What will the population be after 1 year?
21. 21.A scooter is worth ₹28800. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
22. 22.Find the compound interest on ₹32000 at 20% per year for 3 years, compounded every year (in ₹).
23. 23.A scooter is worth ₹39600. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
24. 24.A scooter is worth ₹49000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
25. 25.A town has 16200 people. The population grows by 25% every year. What will the population be after 1 year?
26. 26.Find the compound interest on ₹35900 at 20% per year for 2 years, compounded every year (in ₹).
27. 27.Find the compound interest on ₹44100 at 10% per year for 2 years, compounded every year (in ₹).
28. 28.A scooter is worth ₹8600. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹45000 at 12% per year for 2 years (in ₹)?
30. 30.A town has 8100 people. The population grows by 12% every year. What will the population be after 1 year?
31. 31.What is the difference between the compound interest and the simple interest on ₹39200 at 25% per year for 2 years (in ₹)?
32. 32.What amount will ₹25600 grow to in 3 years at 25% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹11200 at 25% per year for 3 years, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹41100 at 20% per year for 2 years (in ₹)?
35. 35.What amount will ₹6400 grow to in 3 years at 25% per year compound interest (in ₹)?
36. 36.What amount will ₹57700 grow to in 1 year at 8% per year compound interest (in ₹)?
37. 37.A town has 24000 people. The population grows by 15% every year. What will the population be after 3 years?
38. 38.What amount will ₹37000 grow to in 3 years at 10% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹22500 at 4% per year for 2 years, compounded every year (in ₹).
40. 40.Find the compound interest on ₹2500 at 8% per year for 2 years, compounded every year (in ₹).

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