Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 141 · 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 ₹44700 grow to in 1 year at 10% per year compound interest (in ₹)?
2. 2.What amount will ₹37800 grow to in 2 years at 10% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹3000 at 12% per year for 1 year, compounded every year (in ₹).
4. 4.A town has 14300 people. The population grows by 5% every year. What will the population be after 1 year?
5. 5.What is the difference between the compound interest and the simple interest on ₹27500 at 12% per year for 2 years (in ₹)?
6. 6.What amount will ₹24000 grow to in 3 years at 15% per year compound interest (in ₹)?
7. 7.What amount will ₹4900 grow to in 1 year at 8% per year compound interest (in ₹)?
8. 8.What amount will ₹24500 grow to in 1 year at 8% per year compound interest (in ₹)?
9. 9.What amount will ₹4800 grow to in 3 years at 25% per year compound interest (in ₹)?
10. 10.A town has 11200 people. The population grows by 5% every year. What will the population be after 2 years?
11. 11.What is the difference between the compound interest and the simple interest on ₹43600 at 5% per year for 2 years (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹35900 at 25% per year for 1 year, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹38800 at 15% per year for 2 years (in ₹)?
15. 15.What amount will ₹42400 grow to in 1 year at 20% per year compound interest (in ₹)?
16. 16.A town has 5600 people. The population grows by 20% every year. What will the population be after 1 year?
17. 17.A scooter is worth ₹31600. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
18. 18.What amount will ₹3800 grow to in 2 years at 20% per year compound interest (in ₹)?
19. 19.A scooter is worth ₹12800. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
20. 20.What amount will ₹27200 grow to in 2 years at 15% per year compound interest (in ₹)?
21. 21.A town has 58000 people. The population grows by 20% every year. What will the population be after 3 years?
22. 22.Find the compound interest on ₹31000 at 10% per year for 3 years, compounded every year (in ₹).
23. 23.Find the compound interest on ₹13400 at 10% per year for 1 year, compounded every year (in ₹).
24. 24.What amount will ₹51400 grow to in 1 year at 8% per year compound interest (in ₹)?
25. 25.What amount will ₹54000 grow to in 1 year at 12% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹11200 at 25% per year for 3 years, compounded every year (in ₹).
27. 27.Find the compound interest on ₹11500 at 8% per year for 1 year, compounded every year (in ₹).
28. 28.What is the difference between the compound interest and the simple interest on ₹25000 at 12% per year for 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹54800 at 10% per year for 2 years (in ₹)?
30. 30.A town has 33200 people. The population grows by 20% every year. What will the population be after 2 years?
31. 31.Find the compound interest on ₹43000 at 10% per year for 2 years, compounded every year (in ₹).
32. 32.A town has 23000 people. The population grows by 10% every year. What will the population be after 3 years?
33. 33.Find the compound interest on ₹46000 at 25% per year for 2 years, compounded every year (in ₹).
34. 34.A town has 11600 people. The population grows by 12% every year. What will the population be after 1 year?
35. 35.What amount will ₹16200 grow to in 1 year at 25% per year compound interest (in ₹)?
36. 36.What amount will ₹3700 grow to in 1 year at 25% per year compound interest (in ₹)?
37. 37.A town has 19600 people. The population grows by 5% every year. What will the population be after 2 years?
38. 38.What is the difference between the compound interest and the simple interest on ₹14400 at 20% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹20000 at 12% per year for 2 years, compounded every year (in ₹).
40. 40.A town has 9200 people. The population grows by 5% every year. What will the population be after 1 year?

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