Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 329 · 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 ₹41400 grow to in 1 year at 8% per year compound interest (in ₹)?
2. 2.Find the compound interest on ₹12400 at 25% per year for 2 years, compounded every year (in ₹).
3. 3.Find the compound interest on ₹2300 at 10% per year for 1 year, compounded every year (in ₹).
4. 4.What amount will ₹30700 grow to in 1 year at 10% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹56500 at 20% per year for 2 years (in ₹)?
6. 6.Find the compound interest on ₹60000 at 20% per year for 3 years, compounded every year (in ₹).
7. 7.A town has 20200 people. The population grows by 10% every year. What will the population be after 2 years?
8. 8.Find the compound interest on ₹7500 at 12% per year for 2 years, compounded every year (in ₹).
9. 9.What amount will ₹6400 grow to in 1 year at 20% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
11. 11.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
12. 12.Find the compound interest on ₹48900 at 10% per year for 1 year, compounded every year (in ₹).
13. 13.Find the compound interest on ₹35700 at 10% per year for 1 year, compounded every year (in ₹).
14. 14.What amount will ₹4000 grow to in 2 years at 15% per year compound interest (in ₹)?
15. 15.A town has 34000 people. The population grows by 12% every year. What will the population be after 1 year?
16. 16.What amount will ₹57800 grow to in 1 year at 5% per year compound interest (in ₹)?
17. 17.What amount will ₹44000 grow to in 3 years at 10% per year compound interest (in ₹)?
18. 18.What amount will ₹43500 grow to in 1 year at 5% per year compound interest (in ₹)?
19. 19.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹5000 at 4% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹13600 at 25% per year for 2 years, compounded every year (in ₹).
22. 22.A scooter is worth ₹7500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
23. 23.A scooter is worth ₹36000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
24. 24.What amount will ₹44400 grow to in 1 year at 20% per year compound interest (in ₹)?
25. 25.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹12700 at 25% per year for 1 year, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹30400 at 15% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹18000 at 5% per year for 2 years, compounded every year (in ₹).
30. 30.Find the compound interest on ₹54300 at 20% per year for 2 years, compounded every year (in ₹).
31. 31.What amount will ₹2500 grow to in 2 years at 8% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
33. 33.A town has 38400 people. The population grows by 15% every year. What will the population be after 2 years?
34. 34.What is the difference between the compound interest and the simple interest on ₹8400 at 5% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹42900 at 20% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹60000 at 8% per year for 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹12900 at 10% per year for 2 years (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹15000 at 8% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹35700 at 8% per year for 1 year, compounded every year (in ₹).
40. 40.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).

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