Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 724 · 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 town has 35300 people. The population grows by 8% every year. What will the population be after 1 year?
2. 2.What amount will ₹50000 grow to in 2 years at 8% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹10600 at 10% per year for 1 year, compounded every year (in ₹).
4. 4.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹36800 at 25% per year for 2 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹28400 at 15% per year for 2 years (in ₹)?
7. 7.Find the compound interest on ₹16500 at 20% per year for 3 years, compounded every year (in ₹).
8. 8.Find the compound interest on ₹20100 at 20% per year for 1 year, compounded every year (in ₹).
9. 9.A town has 60000 people. The population grows by 8% every year. What will the population be after 2 years?
10. 10.Find the compound interest on ₹30000 at 20% per year for 3 years, compounded every year (in ₹).
11. 11.Find the compound interest on ₹32100 at 10% per year for 1 year, compounded every year (in ₹).
12. 12.What amount will ₹59900 grow to in 1 year at 12% per year compound interest (in ₹)?
13. 13.A scooter is worth ₹45000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
14. 14.What amount will ₹39200 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 ₹22500 at 12% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹45900 at 10% per year for 2 years (in ₹)?
17. 17.What amount will ₹58200 grow to in 1 year at 15% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹45000 at 8% per year for 2 years, compounded every year (in ₹).
19. 19.What amount will ₹7400 grow to in 1 year at 20% per year compound interest (in ₹)?
20. 20.A scooter is worth ₹34300. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
21. 21.Find the compound interest on ₹30400 at 25% per year for 2 years, compounded every year (in ₹).
22. 22.A town has 55100 people. The population grows by 10% every year. What will the population be after 2 years?
23. 23.What is the difference between the compound interest and the simple interest on ₹13200 at 20% per year for 2 years (in ₹)?
24. 24.What amount will ₹51500 grow to in 1 year at 25% per year compound interest (in ₹)?
25. 25.Find the compound interest on ₹27400 at 10% per year for 2 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹2900 at 10% per year for 1 year, compounded every year (in ₹).
27. 27.What amount will ₹3000 grow to in 1 year at 25% per year compound interest (in ₹)?
28. 28.A scooter is worth ₹13100. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
29. 29.Find the compound interest on ₹10000 at 10% per year for 3 years, compounded every year (in ₹).
30. 30.Find the compound interest on ₹42500 at 8% per year for 2 years, compounded every year (in ₹).
31. 31.A town has 26400 people. The population grows by 20% every year. What will the population be after 2 years?
32. 32.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹57800 at 10% per year for 2 years (in ₹)?
34. 34.What amount will ₹34400 grow to in 1 year at 8% per year compound interest (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹51600 at 5% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹11400 at 8% per year for 1 year, compounded every year (in ₹).
37. 37.Find the compound interest on ₹58400 at 10% per year for 2 years, compounded every year (in ₹).
38. 38.Find the compound interest on ₹42300 at 10% per year for 2 years, compounded every year (in ₹).
39. 39.A town has 58900 people. The population grows by 15% every year. What will the population be after 1 year?
40. 40.What amount will ₹43600 grow to in 2 years at 5% per year compound interest (in ₹)?

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