Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 500 · 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 ₹6000 grow to in 3 years at 10% per year compound interest (in ₹)?
2. 2.A scooter is worth ₹20000. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
3. 3.Find the compound interest on ₹12400 at 5% per year for 2 years, compounded every year (in ₹).
4. 4.Find the compound interest on ₹21000 at 10% per year for 3 years, compounded every year (in ₹).
5. 5.What is the difference between the compound interest and the simple interest on ₹26800 at 10% per year for 2 years (in ₹)?
6. 6.What amount will ₹48000 grow to in 3 years at 20% per year compound interest (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹43600 at 25% per year for 2 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹42500 at 10% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹41200 at 25% per year for 2 years, compounded every year (in ₹).
10. 10.What is the difference between the compound interest and the simple interest on ₹42500 at 12% per year for 2 years (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹11400 at 10% per year for 2 years (in ₹)?
12. 12.What amount will ₹55400 grow to in 1 year at 25% per year compound interest (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹46000 at 15% per year for 2 years (in ₹)?
14. 14.A scooter is worth ₹36000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
15. 15.A scooter is worth ₹38800. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
16. 16.What amount will ₹15000 grow to in 3 years at 10% per year compound interest (in ₹)?
17. 17.What amount will ₹56300 grow to in 2 years at 10% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹43700 at 5% per year for 1 year, compounded every year (in ₹).
19. 19.Find the compound interest on ₹38800 at 5% per year for 1 year, compounded every year (in ₹).
20. 20.What is the difference between the compound interest and the simple interest on ₹49400 at 20% per year for 2 years (in ₹)?
21. 21.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹51100 at 15% per year for 1 year, compounded every year (in ₹).
23. 23.Find the compound interest on ₹15000 at 4% per year for 2 years, compounded every year (in ₹).
24. 24.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹5600 at 15% per year for 2 years (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹57500 at 8% per year for 2 years (in ₹)?
27. 27.What amount will ₹38800 grow to in 2 years at 15% per year compound interest (in ₹)?
28. 28.A scooter is worth ₹16000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
29. 29.What amount will ₹7200 grow to in 1 year at 5% per year compound interest (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹12500 at 4% per year for 2 years (in ₹)?
31. 31.What amount will ₹44400 grow to in 2 years at 25% per year compound interest (in ₹)?
32. 32.What amount will ₹22500 grow to in 3 years at 20% per year compound interest (in ₹)?
33. 33.What amount will ₹14200 grow to in 2 years at 20% per year compound interest (in ₹)?
34. 34.A scooter is worth ₹6800. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
35. 35.A town has 42500 people. The population grows by 4% every year. What will the population be after 2 years?
36. 36.Find the compound interest on ₹31400 at 20% per year for 2 years, compounded every year (in ₹).
37. 37.Find the compound interest on ₹12200 at 10% per year for 2 years, compounded every year (in ₹).
38. 38.What is the difference between the compound interest and the simple interest on ₹35300 at 20% per year for 2 years (in ₹)?
39. 39.What amount will ₹44500 grow to in 1 year at 8% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹27500 at 20% per year for 1 year, compounded every year (in ₹).

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