Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 44 · 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.What amount will ₹37500 grow to in 2 years at 4% per year compound interest (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹8400 at 5% per year for 2 years (in ₹)?
3. 3.What amount will ₹45300 grow to in 1 year at 4% per year compound interest (in ₹)?
4. 4.A scooter is worth ₹7200. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹18700 at 20% per year for 2 years (in ₹)?
6. 6.Find the compound interest on ₹13600 at 10% per year for 2 years, compounded every year (in ₹).
7. 7.A town has 20800 people. The population grows by 25% every year. What will the population be after 2 years?
8. 8.A town has 9500 people. The population grows by 4% every year. What will the population be after 1 year?
9. 9.What is the difference between the compound interest and the simple interest on ₹7500 at 12% per year for 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹9400 at 10% per year for 2 years (in ₹)?
11. 11.A scooter is worth ₹24000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
12. 12.A scooter is worth ₹16000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
13. 13.Find the compound interest on ₹26300 at 8% per year for 1 year, compounded every year (in ₹).
14. 14.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
15. 15.What amount will ₹8300 grow to in 1 year at 5% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹16000 at 10% per year for 3 years, compounded every year (in ₹).
17. 17.A town has 53600 people. The population grows by 15% every year. What will the population be after 2 years?
18. 18.What is the difference between the compound interest and the simple interest on ₹2700 at 10% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹6100 at 20% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹9600 at 5% per year for 2 years, compounded every year (in ₹).
21. 21.Find the compound interest on ₹5000 at 8% per year for 2 years, compounded every year (in ₹).
22. 22.Find the compound interest on ₹37000 at 15% per year for 1 year, compounded every year (in ₹).
23. 23.What amount will ₹2200 grow to in 1 year at 20% per year compound interest (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹6400 at 25% per year for 2 years (in ₹)?
25. 25.Find the compound interest on ₹19100 at 5% per year for 1 year, compounded every year (in ₹).
26. 26.What amount will ₹14400 grow to in 2 years at 15% per year compound interest (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹20700 at 20% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹42500 at 4% per year for 2 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹28300 at 20% per year for 2 years, compounded every year (in ₹).
30. 30.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
31. 31.A town has 33800 people. The population grows by 4% every year. What will the population be after 1 year?
32. 32.A scooter is worth ₹23700. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
33. 33.Find the compound interest on ₹55000 at 8% per year for 2 years, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹40000 at 8% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹56100 at 10% per year for 2 years (in ₹)?
36. 36.What amount will ₹30000 grow to in 2 years at 8% per year compound interest (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹2300 at 20% per year for 2 years (in ₹)?
38. 38.What amount will ₹59200 grow to in 2 years at 5% per year compound interest (in ₹)?
39. 39.A scooter is worth ₹24000. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
40. 40.Find the compound interest on ₹35300 at 15% per year for 1 year, compounded every year (in ₹).

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