Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 840 · 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 ₹44800 at 25% per year for 3 years, compounded every year (in ₹).
2. 2.A scooter is worth ₹40000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
3. 3.A town has 20500 people. The population grows by 10% every year. What will the population be after 1 year?
4. 4.Find the compound interest on ₹17500 at 12% per year for 2 years, compounded every year (in ₹).
5. 5.What amount will ₹53000 grow to in 3 years at 10% per year compound interest (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹28400 at 25% per year for 2 years (in ₹)?
7. 7.Find the compound interest on ₹23600 at 25% per year for 2 years, compounded every year (in ₹).
8. 8.Find the compound interest on ₹39100 at 4% per year for 1 year, compounded every year (in ₹).
9. 9.Find the compound interest on ₹42500 at 12% per year for 2 years, compounded every year (in ₹).
10. 10.Find the compound interest on ₹16000 at 5% per year for 2 years, compounded every year (in ₹).
11. 11.Find the compound interest on ₹51400 at 25% per year for 1 year, compounded every year (in ₹).
12. 12.A scooter is worth ₹32000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
13. 13.Find the compound interest on ₹4400 at 5% per year for 2 years, compounded every year (in ₹).
14. 14.What amount will ₹45600 grow to in 2 years at 15% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
16. 16.What amount will ₹18000 grow to in 3 years at 10% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹40000 at 8% per year for 2 years, compounded every year (in ₹).
18. 18.What is the difference between the compound interest and the simple interest on ₹7200 at 15% per year for 2 years (in ₹)?
19. 19.A town has 4100 people. The population grows by 5% every year. What will the population be after 1 year?
20. 20.A town has 22400 people. The population grows by 25% every year. What will the population be after 2 years?
21. 21.A town has 35000 people. The population grows by 12% every year. What will the population be after 2 years?
22. 22.Find the compound interest on ₹8500 at 10% per year for 1 year, compounded every year (in ₹).
23. 23.Find the compound interest on ₹58100 at 5% per year for 1 year, compounded every year (in ₹).
24. 24.Find the compound interest on ₹43600 at 10% per year for 1 year, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹6400 at 15% per year for 2 years (in ₹)?
26. 26.What amount will ₹4800 grow to in 1 year at 10% per year compound interest (in ₹)?
27. 27.What amount will ₹24000 grow to in 2 years at 15% per year compound interest (in ₹)?
28. 28.What amount will ₹30000 grow to in 2 years at 8% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹52500 at 12% per year for 2 years, compounded every year (in ₹).
30. 30.Find the compound interest on ₹40000 at 25% per year for 2 years, compounded every year (in ₹).
31. 31.Find the compound interest on ₹42000 at 10% per year for 2 years, compounded every year (in ₹).
32. 32.A town has 12800 people. The population grows by 25% every year. What will the population be after 3 years?
33. 33.A scooter is worth ₹7900. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹2400 at 20% per year for 2 years (in ₹)?
35. 35.What amount will ₹18800 grow to in 1 year at 5% per year compound interest (in ₹)?
36. 36.A scooter is worth ₹3800. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹20400 at 5% per year for 2 years (in ₹)?
38. 38.What amount will ₹26500 grow to in 1 year at 10% per year compound interest (in ₹)?
39. 39.A scooter is worth ₹40000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
40. 40.What amount will ₹53100 grow to in 1 year at 8% per year compound interest (in ₹)?

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