Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 423 · 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 ₹31700 at 10% per year for 1 year, compounded every year (in ₹).
2. 2.What is the difference between the compound interest and the simple interest on ₹20000 at 15% per year for 2 years (in ₹)?
3. 3.A town has 30400 people. The population grows by 25% every year. What will the population be after 3 years?
4. 4.Find the compound interest on ₹52100 at 25% per year for 1 year, compounded every year (in ₹).
5. 5.Find the compound interest on ₹9200 at 5% per year for 1 year, compounded every year (in ₹).
6. 6.Find the compound interest on ₹45000 at 8% per year for 2 years, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹20400 at 15% per year for 2 years (in ₹)?
8. 8.A scooter is worth ₹17600. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹16800 at 25% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
11. 11.Find the compound interest on ₹59600 at 25% per year for 2 years, compounded every year (in ₹).
12. 12.A town has 50500 people. The population grows by 12% every year. What will the population be after 1 year?
13. 13.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
14. 14.A town has 3600 people. The population grows by 8% every year. What will the population be after 1 year?
15. 15.What amount will ₹11500 grow to in 1 year at 20% per year compound interest (in ₹)?
16. 16.What amount will ₹24700 grow to in 1 year at 5% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹18800 at 4% per year for 1 year, compounded every year (in ₹).
18. 18.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
19. 19.A scooter is worth ₹42500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
20. 20.What amount will ₹14400 grow to in 3 years at 25% per year compound interest (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹25000 at 8% per year for 2 years (in ₹)?
22. 22.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
23. 23.What is the difference between the compound interest and the simple interest on ₹19600 at 5% per year for 2 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?
25. 25.What amount will ₹5000 grow to in 2 years at 8% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹2000 at 20% per year for 1 year, compounded every year (in ₹).
27. 27.A town has 19200 people. The population grows by 25% every year. What will the population be after 3 years?
28. 28.A town has 33400 people. The population grows by 12% every year. What will the population be after 1 year?
29. 29.Find the compound interest on ₹47200 at 10% per year for 1 year, compounded every year (in ₹).
30. 30.Find the compound interest on ₹54000 at 10% per year for 2 years, compounded every year (in ₹).
31. 31.What is the difference between the compound interest and the simple interest on ₹32500 at 12% per year for 2 years (in ₹)?
32. 32.What amount will ₹16800 grow to in 1 year at 15% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹57900 at 10% per year for 2 years (in ₹)?
34. 34.What amount will ₹45000 grow to in 3 years at 10% per year compound interest (in ₹)?
35. 35.A scooter is worth ₹54500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
36. 36.What amount will ₹8400 grow to in 2 years at 25% per year compound interest (in ₹)?
37. 37.What amount will ₹45000 grow to in 2 years at 12% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹44100 at 25% per year for 1 year, compounded every year (in ₹).
39. 39.A scooter is worth ₹20000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹3500 at 10% per year for 2 years (in ₹)?

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