Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 402 · 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 scooter is worth ₹16000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
2. 2.What amount will ₹10000 grow to in 2 years at 8% per year compound interest (in ₹)?
3. 3.A scooter is worth ₹8900. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
4. 4.Find the compound interest on ₹50800 at 25% per year for 1 year, compounded every year (in ₹).
5. 5.Find the compound interest on ₹9800 at 25% per year for 1 year, compounded every year (in ₹).
6. 6.A scooter is worth ₹14000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
7. 7.What amount will ₹33100 grow to in 1 year at 5% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹22500 at 8% per year for 2 years, compounded every year (in ₹).
9. 9.What amount will ₹17100 grow to in 1 year at 5% per year compound interest (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹50000 at 5% per year for 2 years (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹3200 at 15% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹12700 at 5% per year for 1 year, compounded every year (in ₹).
13. 13.Find the compound interest on ₹5000 at 12% per year for 2 years, compounded every year (in ₹).
14. 14.A town has 8000 people. The population grows by 10% every year. What will the population be after 1 year?
15. 15.What amount will ₹34300 grow to in 2 years at 10% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹17500 at 8% per year for 2 years, compounded every year (in ₹).
17. 17.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹22800 at 25% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹50000 at 4% per year for 2 years, compounded every year (in ₹).
20. 20.What amount will ₹26000 grow to in 2 years at 15% per year compound interest (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹55600 at 5% per year for 2 years (in ₹)?
22. 22.A scooter is worth ₹47900. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
23. 23.Find the compound interest on ₹12800 at 5% per year for 2 years, compounded every year (in ₹).
24. 24.A town has 12600 people. The population grows by 20% every year. What will the population be after 1 year?
25. 25.What amount will ₹45000 grow to in 2 years at 4% per year compound interest (in ₹)?
26. 26.A town has 48400 people. The population grows by 5% every year. What will the population be after 2 years?
27. 27.What is the difference between the compound interest and the simple interest on ₹37500 at 12% per year for 2 years (in ₹)?
28. 28.What amount will ₹18800 grow to in 2 years at 5% per year compound interest (in ₹)?
29. 29.A scooter is worth ₹5000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
30. 30.A town has 22800 people. The population grows by 25% every year. What will the population be after 1 year?
31. 31.What is the difference between the compound interest and the simple interest on ₹45600 at 5% per year for 2 years (in ₹)?
32. 32.Find the compound interest on ₹14400 at 8% per year for 1 year, compounded every year (in ₹).
33. 33.What is the difference between the compound interest and the simple interest on ₹32900 at 10% per year for 2 years (in ₹)?
34. 34.What amount will ₹10000 grow to in 3 years at 10% per year compound interest (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹37600 at 15% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹52200 at 10% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹56400 at 5% per year for 2 years, compounded every year (in ₹).
38. 38.A scooter is worth ₹40400. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
39. 39.A town has 48600 people. The population grows by 10% every year. What will the population be after 1 year?
40. 40.What amount will ₹24600 grow to in 1 year at 4% per year compound interest (in ₹)?

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