Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 251 · 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.Find the compound interest on ₹12400 at 12% per year for 1 year, compounded every year (in ₹).
2. 2.A scooter is worth ₹2000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
3. 3.What amount will ₹7000 grow to in 2 years at 10% per year compound interest (in ₹)?
4. 4.A town has 30000 people. The population grows by 4% every year. What will the population be after 2 years?
5. 5.A scooter is worth ₹37500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
6. 6.A town has 18600 people. The population grows by 20% every year. What will the population be after 1 year?
7. 7.Find the compound interest on ₹12500 at 8% per year for 2 years, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹25000 at 4% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹7600 at 25% per year for 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹51600 at 5% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹54100 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.A scooter is worth ₹3200. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
14. 14.What amount will ₹16000 grow to in 2 years at 15% per year compound interest (in ₹)?
15. 15.What amount will ₹11000 grow to in 2 years at 20% per year compound interest (in ₹)?
16. 16.A scooter is worth ₹22500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
17. 17.A town has 51200 people. The population grows by 15% every year. What will the population be after 2 years?
18. 18.What is the difference between the compound interest and the simple interest on ₹37200 at 25% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹44800 at 5% per year for 2 years (in ₹)?
20. 20.What amount will ₹11200 grow to in 2 years at 10% per year compound interest (in ₹)?
21. 21.A town has 46800 people. The population grows by 10% every year. What will the population be after 1 year?
22. 22.Find the compound interest on ₹59200 at 10% per year for 1 year, compounded every year (in ₹).
23. 23.What is the difference between the compound interest and the simple interest on ₹32500 at 12% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
25. 25.What amount will ₹31400 grow to in 1 year at 8% per year compound interest (in ₹)?
26. 26.A town has 40000 people. The population grows by 15% every year. What will the population be after 3 years?
27. 27.Find the compound interest on ₹5300 at 4% per year for 1 year, compounded every year (in ₹).
28. 28.Find the compound interest on ₹51100 at 20% per year for 1 year, compounded every year (in ₹).
29. 29.What amount will ₹35100 grow to in 1 year at 4% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹56400 at 8% per year for 1 year, compounded every year (in ₹).
31. 31.What amount will ₹32500 grow to in 2 years at 8% per year compound interest (in ₹)?
32. 32.What amount will ₹43500 grow to in 2 years at 20% per year compound interest (in ₹)?
33. 33.A town has 47500 people. The population grows by 4% every year. What will the population be after 2 years?
34. 34.What amount will ₹15000 grow to in 2 years at 4% per year compound interest (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹50400 at 15% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹17200 at 5% per year for 2 years (in ₹)?
37. 37.What amount will ₹12100 grow to in 1 year at 12% per year compound interest (in ₹)?
38. 38.A scooter is worth ₹15000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
39. 39.What amount will ₹8900 grow to in 1 year at 15% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹42800 at 25% per year for 2 years (in ₹)?

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