Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 257 · 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 ₹17800 grow to in 2 years at 20% per year compound interest (in ₹)?
2. 2.Find the compound interest on ₹23100 at 12% per year for 1 year, compounded every year (in ₹).
3. 3.What amount will ₹9700 grow to in 1 year at 15% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹59600 at 25% per year for 1 year, compounded every year (in ₹).
5. 5.What is the difference between the compound interest and the simple interest on ₹29600 at 15% per year for 2 years (in ₹)?
6. 6.A scooter is worth ₹35600. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
7. 7.Find the compound interest on ₹3200 at 15% per year for 2 years, compounded every year (in ₹).
8. 8.A town has 40000 people. The population grows by 5% every year. What will the population be after 3 years?
9. 9.What is the difference between the compound interest and the simple interest on ₹25000 at 8% per year for 2 years (in ₹)?
10. 10.A town has 19300 people. The population grows by 20% every year. What will the population be after 2 years?
11. 11.What amount will ₹36800 grow to in 3 years at 25% per year compound interest (in ₹)?
12. 12.A town has 51200 people. The population grows by 25% every year. What will the population be after 3 years?
13. 13.What amount will ₹51900 grow to in 1 year at 4% per year compound interest (in ₹)?
14. 14.What amount will ₹40400 grow to in 2 years at 15% per year compound interest (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹32000 at 25% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹16000 at 5% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹7200 at 20% per year for 2 years (in ₹)?
18. 18.A town has 14000 people. The population grows by 8% every year. What will the population be after 1 year?
19. 19.A town has 56000 people. The population grows by 5% every year. What will the population be after 3 years?
20. 20.Find the compound interest on ₹10400 at 12% per year for 1 year, compounded every year (in ₹).
21. 21.A town has 45000 people. The population grows by 5% every year. What will the population be after 1 year?
22. 22.A town has 7300 people. The population grows by 15% every year. What will the population be after 1 year?
23. 23.What amount will ₹20000 grow to in 2 years at 8% per year compound interest (in ₹)?
24. 24.What amount will ₹58400 grow to in 1 year at 25% per year compound interest (in ₹)?
25. 25.What amount will ₹32000 grow to in 2 years at 15% per year compound interest (in ₹)?
26. 26.A scooter is worth ₹4800. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹55000 at 8% per year for 2 years (in ₹)?
28. 28.What amount will ₹43200 grow to in 3 years at 25% per year compound interest (in ₹)?
29. 29.What amount will ₹43000 grow to in 3 years at 10% per year compound interest (in ₹)?
30. 30.What amount will ₹35800 grow to in 1 year at 4% per year compound interest (in ₹)?
31. 31.What amount will ₹5200 grow to in 2 years at 15% per year compound interest (in ₹)?
32. 32.What amount will ₹32500 grow to in 2 years at 8% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹40000 at 4% per year for 2 years (in ₹)?
34. 34.What amount will ₹21100 grow to in 1 year at 5% per year compound interest (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹3800 at 10% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹60000 at 8% per year for 2 years (in ₹)?
37. 37.A scooter is worth ₹22000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
38. 38.Find the compound interest on ₹6000 at 10% per year for 3 years, compounded every year (in ₹).
39. 39.A town has 21200 people. The population grows by 5% every year. What will the population be after 2 years?
40. 40.What is the difference between the compound interest and the simple interest on ₹57600 at 25% per year for 2 years (in ₹)?

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