Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 408 · 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 ₹7000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
2. 2.Find the compound interest on ₹2500 at 12% per year for 2 years, compounded every year (in ₹).
3. 3.Find the compound interest on ₹52800 at 25% per year for 1 year, compounded every year (in ₹).
4. 4.What amount will ₹16000 grow to in 3 years at 15% per year compound interest (in ₹)?
5. 5.What amount will ₹3000 grow to in 1 year at 15% per year compound interest (in ₹)?
6. 6.A town has 25000 people. The population grows by 12% every year. What will the population be after 2 years?
7. 7.What amount will ₹31600 grow to in 1 year at 12% per year compound interest (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹43200 at 15% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹51700 at 20% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
11. 11.What amount will ₹22500 grow to in 2 years at 8% per year compound interest (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹53700 at 20% per year for 2 years (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹4500 at 20% per year for 2 years (in ₹)?
14. 14.Find the compound interest on ₹48300 at 12% per year for 1 year, compounded every year (in ₹).
15. 15.Find the compound interest on ₹30000 at 5% per year for 1 year, compounded every year (in ₹).
16. 16.What amount will ₹7200 grow to in 1 year at 10% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹22500 at 12% per year for 2 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹57500 at 12% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹37500 at 4% per year for 2 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹36000 at 25% per year for 2 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹8800 at 15% per year for 2 years (in ₹)?
22. 22.Find the compound interest on ₹4000 at 10% per year for 3 years, compounded every year (in ₹).
23. 23.A town has 48000 people. The population grows by 25% every year. What will the population be after 2 years?
24. 24.Find the compound interest on ₹4800 at 25% per year for 3 years, compounded every year (in ₹).
25. 25.What amount will ₹32500 grow to in 2 years at 12% per year compound interest (in ₹)?
26. 26.What amount will ₹55000 grow to in 2 years at 8% per year compound interest (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹25600 at 15% per year for 2 years (in ₹)?
28. 28.What amount will ₹57500 grow to in 2 years at 4% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹55000 at 8% per year for 2 years, compounded every year (in ₹).
30. 30.Find the compound interest on ₹38500 at 20% per year for 3 years, compounded every year (in ₹).
31. 31.What amount will ₹8400 grow to in 2 years at 5% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹2500 at 8% per year for 2 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹17500 at 20% per year for 2 years, compounded every year (in ₹).
34. 34.What amount will ₹27400 grow to in 2 years at 10% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹54000 at 15% per year for 2 years, compounded every year (in ₹).
36. 36.Find the compound interest on ₹54400 at 20% per year for 1 year, compounded every year (in ₹).
37. 37.What amount will ₹40400 grow to in 2 years at 15% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹14000 at 10% per year for 2 years (in ₹)?
39. 39.A scooter is worth ₹45000. 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 ₹7500 at 12% per year for 2 years (in ₹)?

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