Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 188 · 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 ₹32500 grow to in 2 years at 12% per year compound interest (in ₹)?
2. 2.A town has 8800 people. The population grows by 15% every year. What will the population be after 1 year?
3. 3.What is the difference between the compound interest and the simple interest on ₹36400 at 5% per year for 2 years (in ₹)?
4. 4.What amount will ₹27900 grow to in 1 year at 8% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹47500 at 8% per year for 2 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹47600 at 15% per year for 2 years (in ₹)?
7. 7.What amount will ₹2900 grow to in 1 year at 4% per year compound interest (in ₹)?
8. 8.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
9. 9.A town has 12900 people. The population grows by 20% every year. What will the population be after 1 year?
10. 10.Find the compound interest on ₹8800 at 15% per year for 2 years, compounded every year (in ₹).
11. 11.What is the difference between the compound interest and the simple interest on ₹12000 at 5% per year for 2 years (in ₹)?
12. 12.A scooter is worth ₹18400. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹42200 at 10% per year for 2 years (in ₹)?
14. 14.A town has 13500 people. The population grows by 20% every year. What will the population be after 3 years?
15. 15.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹14800 at 5% per year for 2 years (in ₹)?
17. 17.What amount will ₹2400 grow to in 1 year at 12% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹37100 at 4% per year for 1 year, compounded every year (in ₹).
19. 19.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
20. 20.What amount will ₹50000 grow to in 1 year at 5% per year compound interest (in ₹)?
21. 21.What amount will ₹2500 grow to in 2 years at 8% per year compound interest (in ₹)?
22. 22.A town has 16200 people. The population grows by 20% every year. What will the population be after 1 year?
23. 23.Find the compound interest on ₹29400 at 15% per year for 1 year, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹50000 at 12% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹15000 at 4% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
27. 27.A scooter is worth ₹42000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹6400 at 25% per year for 2 years (in ₹)?
29. 29.What amount will ₹2900 grow to in 1 year at 5% per year compound interest (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹32500 at 12% per year for 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹5900 at 20% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹10000 at 8% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹3300 at 10% per year for 2 years, compounded every year (in ₹).
34. 34.A scooter is worth ₹18900. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹21200 at 25% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹17600 at 25% per year for 3 years, compounded every year (in ₹).
37. 37.Find the compound interest on ₹4600 at 20% per year for 2 years, compounded every year (in ₹).
38. 38.Find the compound interest on ₹32000 at 20% per year for 3 years, compounded every year (in ₹).
39. 39.A town has 57700 people. The population grows by 10% every year. What will the population be after 2 years?
40. 40.A scooter is worth ₹4100. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?

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