Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 933 · 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 ₹37500 grow to in 2 years at 4% per year compound interest (in ₹)?
2. 2.What amount will ₹58000 grow to in 3 years at 20% per year compound interest (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹28400 at 20% per year for 2 years (in ₹)?
4. 4.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹17500 at 8% per year for 2 years (in ₹)?
6. 6.What amount will ₹17200 grow to in 1 year at 12% per year compound interest (in ₹)?
7. 7.A scooter is worth ₹14100. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
8. 8.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
9. 9.What amount will ₹40900 grow to in 1 year at 5% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹26400 at 5% per year for 2 years, compounded every year (in ₹).
11. 11.Find the compound interest on ₹45600 at 20% per year for 1 year, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹60000 at 8% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹43800 at 20% per year for 1 year, compounded every year (in ₹).
14. 14.What amount will ₹12500 grow to in 1 year at 8% per year compound interest (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹53200 at 5% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹15000 at 4% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹2000 at 25% per year for 2 years (in ₹)?
18. 18.What amount will ₹14700 grow to in 1 year at 12% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹21900 at 8% per year for 1 year, compounded every year (in ₹).
20. 20.Find the compound interest on ₹42500 at 15% per year for 1 year, compounded every year (in ₹).
21. 21.Find the compound interest on ₹20800 at 25% per year for 3 years, compounded every year (in ₹).
22. 22.A town has 20000 people. The population grows by 20% every year. What will the population be after 3 years?
23. 23.What amount will ₹42600 grow to in 1 year at 5% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹20000 at 8% per year for 2 years, compounded every year (in ₹).
25. 25.What amount will ₹48700 grow to in 1 year at 5% per year compound interest (in ₹)?
26. 26.A town has 44200 people. The population grows by 25% every year. What will the population be after 1 year?
27. 27.A town has 44600 people. The population grows by 20% every year. What will the population be after 1 year?
28. 28.Find the compound interest on ₹29800 at 10% per year for 2 years, compounded every year (in ₹).
29. 29.What is the difference between the compound interest and the simple interest on ₹44300 at 20% per year for 2 years (in ₹)?
30. 30.What amount will ₹34000 grow to in 2 years at 15% per year compound interest (in ₹)?
31. 31.A scooter is worth ₹4000. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
32. 32.A scooter is worth ₹10000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
33. 33.A scooter is worth ₹3700. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
34. 34.What amount will ₹32500 grow to in 2 years at 4% per year compound interest (in ₹)?
35. 35.What amount will ₹14000 grow to in 3 years at 20% per year compound interest (in ₹)?
36. 36.A scooter is worth ₹49500. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
37. 37.Find the compound interest on ₹12300 at 20% per year for 2 years, compounded every year (in ₹).
38. 38.What is the difference between the compound interest and the simple interest on ₹30000 at 12% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹11100 at 20% per year for 1 year, compounded every year (in ₹).
40. 40.What amount will ₹59600 grow to in 2 years at 25% per year compound interest (in ₹)?

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