Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 986 · 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 ₹40000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
2. 2.A town has 21000 people. The population grows by 20% every year. What will the population be after 3 years?
3. 3.What is the difference between the compound interest and the simple interest on ₹26400 at 25% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹32900 at 10% per year for 1 year, compounded every year (in ₹).
5. 5.Find the compound interest on ₹53400 at 20% per year for 2 years, compounded every year (in ₹).
6. 6.A town has 22500 people. The population grows by 8% every year. What will the population be after 2 years?
7. 7.What is the difference between the compound interest and the simple interest on ₹27600 at 5% per year for 2 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹20000 at 8% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹5200 at 5% per year for 2 years (in ₹)?
10. 10.A scooter is worth ₹12500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
11. 11.What amount will ₹52500 grow to in 2 years at 12% per year compound interest (in ₹)?
12. 12.Find the compound interest on ₹50500 at 4% per year for 1 year, compounded every year (in ₹).
13. 13.Find the compound interest on ₹31900 at 8% per year for 1 year, compounded every year (in ₹).
14. 14.Find the compound interest on ₹60000 at 10% per year for 3 years, compounded every year (in ₹).
15. 15.What amount will ₹35000 grow to in 2 years at 4% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹23600 at 5% per year for 2 years, compounded every year (in ₹).
17. 17.A scooter is worth ₹16000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
18. 18.Find the compound interest on ₹51200 at 15% per year for 2 years, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹57500 at 4% per year for 2 years (in ₹)?
20. 20.A town has 32000 people. The population grows by 25% every year. What will the population be after 2 years?
21. 21.A town has 24400 people. The population grows by 10% every year. What will the population be after 1 year?
22. 22.What is the difference between the compound interest and the simple interest on ₹47500 at 10% per year for 2 years (in ₹)?
23. 23.Find the compound interest on ₹24000 at 25% per year for 3 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹15000 at 12% per year for 2 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹7600 at 5% per year for 2 years, compounded every year (in ₹).
26. 26.What amount will ₹16500 grow to in 2 years at 20% per year compound interest (in ₹)?
27. 27.What amount will ₹5200 grow to in 2 years at 10% per year compound interest (in ₹)?
28. 28.What amount will ₹2000 grow to in 3 years at 10% per year compound interest (in ₹)?
29. 29.What amount will ₹5000 grow to in 2 years at 8% per year compound interest (in ₹)?
30. 30.A scooter is worth ₹25000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹4800 at 15% per year for 2 years (in ₹)?
32. 32.What amount will ₹25900 grow to in 1 year at 20% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹36000 at 10% per year for 1 year, compounded every year (in ₹).
34. 34.What amount will ₹17200 grow to in 2 years at 25% per year compound interest (in ₹)?
35. 35.A town has 50800 people. The population grows by 15% every year. What will the population be after 2 years?
36. 36.What amount will ₹32600 grow to in 2 years at 10% per year compound interest (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹21000 at 20% per year for 2 years (in ₹)?
38. 38.A scooter is worth ₹26700. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
39. 39.A town has 3700 people. The population grows by 12% every year. What will the population be after 1 year?
40. 40.What amount will ₹42100 grow to in 2 years at 20% per year compound interest (in ₹)?

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