Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 214 · 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 is the difference between the compound interest and the simple interest on ₹29200 at 15% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹35200 at 15% per year for 2 years (in ₹)?
3. 3.A town has 40700 people. The population grows by 10% every year. What will the population be after 1 year?
4. 4.What amount will ₹24400 grow to in 1 year at 20% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹18400 at 5% per year for 2 years (in ₹)?
6. 6.Find the compound interest on ₹59400 at 10% per year for 1 year, compounded every year (in ₹).
7. 7.Find the compound interest on ₹47500 at 8% per year for 2 years, compounded every year (in ₹).
8. 8.A scooter is worth ₹26800. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
9. 9.A scooter is worth ₹36800. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
10. 10.What amount will ₹12000 grow to in 3 years at 10% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹16000 at 20% per year for 1 year, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹35000 at 12% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹30800 at 5% per year for 2 years, compounded every year (in ₹).
14. 14.A town has 49600 people. The population grows by 10% every year. What will the population be after 1 year?
15. 15.Find the compound interest on ₹49000 at 10% per year for 3 years, compounded every year (in ₹).
16. 16.Find the compound interest on ₹10000 at 4% per year for 2 years, compounded every year (in ₹).
17. 17.What amount will ₹34300 grow to in 1 year at 15% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹37500 at 8% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹57600 at 20% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹28600 at 5% per year for 1 year, compounded every year (in ₹).
21. 21.What amount will ₹40000 grow to in 1 year at 10% per year compound interest (in ₹)?
22. 22.What amount will ₹55000 grow to in 1 year at 15% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹4400 at 20% per year for 2 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹51700 at 10% per year for 1 year, compounded every year (in ₹).
27. 27.What amount will ₹16000 grow to in 3 years at 15% per year compound interest (in ₹)?
28. 28.A scooter is worth ₹40700. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
29. 29.A town has 12300 people. The population grows by 4% every year. What will the population be after 1 year?
30. 30.What is the difference between the compound interest and the simple interest on ₹26800 at 5% per year for 2 years (in ₹)?
31. 31.A town has 25000 people. The population grows by 8% every year. What will the population be after 2 years?
32. 32.What is the difference between the compound interest and the simple interest on ₹34400 at 25% per year for 2 years (in ₹)?
33. 33.What amount will ₹9300 grow to in 1 year at 10% per year compound interest (in ₹)?
34. 34.A scooter is worth ₹43100. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
35. 35.What amount will ₹39600 grow to in 2 years at 5% per year compound interest (in ₹)?
36. 36.Find the compound interest on ₹54400 at 25% per year for 3 years, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹6400 at 25% per year for 2 years (in ₹)?
38. 38.A scooter is worth ₹5000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
39. 39.Find the compound interest on ₹24900 at 5% per year for 1 year, compounded every year (in ₹).
40. 40.A town has 56000 people. The population grows by 15% every year. What will the population be after 3 years?

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