Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 98 · 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 ₹13300. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
2. 2.What amount will ₹13500 grow to in 1 year at 10% per year compound interest (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹42100 at 20% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹51500 at 10% per year for 1 year, compounded every year (in ₹).
5. 5.What amount will ₹30000 grow to in 3 years at 10% per year compound interest (in ₹)?
6. 6.What amount will ₹58000 grow to in 1 year at 5% per year compound interest (in ₹)?
7. 7.A scooter is worth ₹37700. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹13900 at 20% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹42800 at 15% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹11600 at 15% per year for 2 years, compounded every year (in ₹).
11. 11.What amount will ₹32000 grow to in 2 years at 5% per year compound interest (in ₹)?
12. 12.A town has 30000 people. The population grows by 4% every year. What will the population be after 2 years?
13. 13.A scooter is worth ₹42700. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹48000 at 5% per year for 2 years (in ₹)?
15. 15.What amount will ₹45000 grow to in 2 years at 12% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹6000 at 25% per year for 2 years, compounded every year (in ₹).
17. 17.What amount will ₹12500 grow to in 2 years at 4% per year compound interest (in ₹)?
18. 18.What amount will ₹34500 grow to in 3 years at 20% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹14300 at 10% per year for 1 year, compounded every year (in ₹).
20. 20.A town has 15000 people. The population grows by 12% every year. What will the population be after 2 years?
21. 21.A scooter is worth ₹25000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
22. 22.What amount will ₹15200 grow to in 2 years at 25% per year compound interest (in ₹)?
23. 23.A town has 25700 people. The population grows by 12% every year. What will the population be after 1 year?
24. 24.A town has 25400 people. The population grows by 12% 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 ₹3600 at 5% per year for 2 years (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹48800 at 5% per year for 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹30400 at 5% per year for 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹60000 at 15% per year for 2 years (in ₹)?
29. 29.A town has 3600 people. The population grows by 10% every year. What will the population be after 2 years?
30. 30.What amount will ₹6200 grow to in 1 year at 5% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹18100 at 20% per year for 2 years, compounded every year (in ₹).
32. 32.A town has 45000 people. The population grows by 8% every year. What will the population be after 2 years?
33. 33.What is the difference between the compound interest and the simple interest on ₹12500 at 4% per year for 2 years (in ₹)?
34. 34.A scooter is worth ₹34700. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
35. 35.A town has 51200 people. The population grows by 25% every year. What will the population be after 3 years?
36. 36.What is the difference between the compound interest and the simple interest on ₹27500 at 8% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹39700 at 15% per year for 1 year, compounded every year (in ₹).
38. 38.Find the compound interest on ₹60000 at 10% per year for 1 year, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹28600 at 10% per year for 2 years (in ₹)?
40. 40.What amount will ₹54100 grow to in 1 year at 8% per year compound interest (in ₹)?

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