Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 780 · 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 ₹10400 at 25% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹32500 at 4% per year for 2 years (in ₹)?
3. 3.What amount will ₹42400 grow to in 1 year at 12% per year compound interest (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹12500 at 8% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹56700 at 20% per year for 1 year, compounded every year (in ₹).
6. 6.Find the compound interest on ₹5000 at 12% per year for 2 years, compounded every year (in ₹).
7. 7.Find the compound interest on ₹37500 at 4% per year for 2 years, compounded every year (in ₹).
8. 8.Find the compound interest on ₹8900 at 10% per year for 2 years, compounded every year (in ₹).
9. 9.What amount will ₹22500 grow to in 2 years at 12% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹38000 at 12% per year for 1 year, compounded every year (in ₹).
11. 11.A scooter is worth ₹44600. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
12. 12.Find the compound interest on ₹28500 at 12% per year for 1 year, compounded every year (in ₹).
13. 13.A scooter is worth ₹40000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
14. 14.What amount will ₹23000 grow to in 3 years at 10% per year compound interest (in ₹)?
15. 15.What amount will ₹34600 grow to in 1 year at 4% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹47200 at 25% per year for 2 years (in ₹)?
17. 17.Find the compound interest on ₹47500 at 8% per year for 2 years, compounded every year (in ₹).
18. 18.A scooter is worth ₹16000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
19. 19.Find the compound interest on ₹55000 at 20% per year for 3 years, compounded every year (in ₹).
20. 20.What amount will ₹17000 grow to in 1 year at 5% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹4800 at 15% per year for 2 years, compounded every year (in ₹).
22. 22.What amount will ₹28400 grow to in 2 years at 15% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹53200 at 10% per year for 2 years, compounded every year (in ₹).
24. 24.A town has 57700 people. The population grows by 5% every year. What will the population be after 1 year?
25. 25.What is the difference between the compound interest and the simple interest on ₹52800 at 15% per year for 2 years (in ₹)?
26. 26.What amount will ₹10000 grow to in 2 years at 12% per year compound interest (in ₹)?
27. 27.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
28. 28.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
29. 29.What is the difference between the compound interest and the simple interest on ₹50000 at 4% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹6400 at 25% per year for 3 years, compounded every year (in ₹).
31. 31.Find the compound interest on ₹11600 at 20% per year for 1 year, compounded every year (in ₹).
32. 32.Find the compound interest on ₹31400 at 20% per year for 2 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹54400 at 15% per year for 2 years, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹20300 at 10% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹48000 at 25% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹41600 at 10% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹9600 at 25% per year for 3 years, compounded every year (in ₹).
38. 38.Find the compound interest on ₹52000 at 10% per year for 2 years, compounded every year (in ₹).
39. 39.Find the compound interest on ₹13900 at 8% per year for 1 year, compounded every year (in ₹).
40. 40.A scooter is worth ₹8000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?

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