Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 985 · 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 ₹2800 at 25% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹23100 at 20% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹29500 at 20% per year for 3 years, compounded every year (in ₹).
4. 4.Find the compound interest on ₹32300 at 10% per year for 1 year, compounded every year (in ₹).
5. 5.What amount will ₹29200 grow to in 2 years at 25% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹33600 at 25% per year for 3 years, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
8. 8.Find the compound interest on ₹32500 at 12% per year for 2 years, compounded every year (in ₹).
9. 9.Find the compound interest on ₹44600 at 20% per year for 2 years, compounded every year (in ₹).
10. 10.A scooter is worth ₹38800. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
11. 11.What amount will ₹28000 grow to in 2 years at 20% per year compound interest (in ₹)?
12. 12.Find the compound interest on ₹47000 at 20% per year for 3 years, compounded every year (in ₹).
13. 13.A town has 2600 people. The population grows by 20% every year. What will the population be after 1 year?
14. 14.A scooter is worth ₹4000. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
15. 15.What amount will ₹40000 grow to in 2 years at 4% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹12900 at 15% per year for 1 year, compounded every year (in ₹).
17. 17.What amount will ₹37100 grow to in 1 year at 20% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹35000 at 12% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹12400 at 15% per year for 2 years, compounded every year (in ₹).
20. 20.What amount will ₹42800 grow to in 2 years at 25% per year compound interest (in ₹)?
21. 21.What amount will ₹29300 grow to in 2 years at 10% per year compound interest (in ₹)?
22. 22.A town has 35100 people. The population grows by 25% every year. What will the population be after 1 year?
23. 23.What is the difference between the compound interest and the simple interest on ₹5000 at 12% per year for 2 years (in ₹)?
24. 24.A scooter is worth ₹59100. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
25. 25.Find the compound interest on ₹30000 at 10% per year for 3 years, compounded every year (in ₹).
26. 26.A town has 4400 people. The population grows by 5% every year. What will the population be after 2 years?
27. 27.What is the difference between the compound interest and the simple interest on ₹38000 at 5% per year for 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹45000 at 12% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹35900 at 10% per year for 1 year, compounded every year (in ₹).
30. 30.Find the compound interest on ₹60000 at 4% per year for 2 years, compounded every year (in ₹).
31. 31.What is the difference between the compound interest and the simple interest on ₹10800 at 5% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹28000 at 25% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹41200 at 10% per year for 2 years (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹25600 at 25% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹4400 at 15% per year for 2 years (in ₹)?
36. 36.What amount will ₹52800 grow to in 1 year at 10% per year compound interest (in ₹)?
37. 37.What amount will ₹43000 grow to in 1 year at 15% per year compound interest (in ₹)?
38. 38.A town has 27200 people. The population grows by 10% every year. What will the population be after 1 year?
39. 39.What amount will ₹50000 grow to in 2 years at 4% per year compound interest (in ₹)?
40. 40.What amount will ₹6000 grow to in 1 year at 5% per year compound interest (in ₹)?

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