Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 960 · 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 ₹43000 grow to in 3 years at 10% per year compound interest (in ₹)?
2. 2.A scooter is worth ₹47000. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹33600 at 20% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹13800 at 10% per year for 2 years, compounded every year (in ₹).
5. 5.A town has 22100 people. The population grows by 8% every year. What will the population be after 1 year?
6. 6.Find the compound interest on ₹7500 at 4% per year for 2 years, compounded every year (in ₹).
7. 7.What amount will ₹17000 grow to in 2 years at 20% per year compound interest (in ₹)?
8. 8.What amount will ₹8800 grow to in 1 year at 25% per year compound interest (in ₹)?
9. 9.What amount will ₹9900 grow to in 2 years at 10% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹31000 at 20% per year for 2 years, compounded every year (in ₹).
11. 11.A scooter is worth ₹46000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
12. 12.Find the compound interest on ₹56000 at 15% per year for 3 years, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹32000 at 25% per year for 2 years (in ₹)?
14. 14.A town has 17200 people. The population grows by 20% every year. What will the population be after 2 years?
15. 15.Find the compound interest on ₹56000 at 25% per year for 3 years, compounded every year (in ₹).
16. 16.A scooter is worth ₹16000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
17. 17.Find the compound interest on ₹24000 at 15% per year for 3 years, compounded every year (in ₹).
18. 18.A town has 52500 people. The population grows by 8% every year. What will the population be after 2 years?
19. 19.What amount will ₹9400 grow to in 1 year at 10% per year compound interest (in ₹)?
20. 20.A scooter is worth ₹25000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
21. 21.Find the compound interest on ₹22200 at 25% per year for 1 year, compounded every year (in ₹).
22. 22.Find the compound interest on ₹38900 at 5% per year for 1 year, compounded every year (in ₹).
23. 23.A town has 9900 people. The population grows by 10% every year. What will the population be after 2 years?
24. 24.What amount will ₹30700 grow to in 1 year at 20% per year compound interest (in ₹)?
25. 25.Find the compound interest on ₹16700 at 10% per year for 1 year, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹8200 at 10% per year for 2 years (in ₹)?
27. 27.A town has 15600 people. The population grows by 20% every year. What will the population be after 1 year?
28. 28.A town has 40000 people. The population grows by 4% every year. What will the population be after 2 years?
29. 29.What amount will ₹22200 grow to in 1 year at 8% per year compound interest (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹5900 at 10% per year for 2 years (in ₹)?
31. 31.Find the compound interest on ₹41000 at 20% per year for 3 years, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹28700 at 10% per year for 2 years (in ₹)?
33. 33.A town has 53000 people. The population grows by 10% every year. What will the population be after 1 year?
34. 34.A town has 52800 people. The population grows by 12% every year. What will the population be after 1 year?
35. 35.A scooter is worth ₹3800. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
36. 36.What amount will ₹38000 grow to in 3 years at 20% per year compound interest (in ₹)?
37. 37.What amount will ₹34800 grow to in 2 years at 5% per year compound interest (in ₹)?
38. 38.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹56400 at 15% per year for 2 years, compounded every year (in ₹).
40. 40.A town has 12600 people. The population grows by 12% every year. What will the population be after 1 year?

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