Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 351 · 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 ₹8000 at 25% per year for 3 years, compounded every year (in ₹).
2. 2.What amount will ₹18900 grow to in 1 year at 10% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹42000 at 8% per year for 1 year, compounded every year (in ₹).
4. 4.Find the compound interest on ₹57000 at 25% per year for 1 year, compounded every year (in ₹).
5. 5.What amount will ₹17100 grow to in 2 years at 10% per year compound interest (in ₹)?
6. 6.A town has 52700 people. The population grows by 4% every year. What will the population be after 1 year?
7. 7.What amount will ₹33500 grow to in 3 years at 20% per year compound interest (in ₹)?
8. 8.A town has 55200 people. The population grows by 15% every year. What will the population be after 2 years?
9. 9.What amount will ₹56800 grow to in 1 year at 20% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹48500 at 12% per year for 1 year, compounded every year (in ₹).
11. 11.A scooter is worth ₹24800. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
12. 12.What amount will ₹23600 grow to in 2 years at 5% per year compound interest (in ₹)?
13. 13.What amount will ₹46800 grow to in 2 years at 10% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹15000 at 4% per year for 2 years (in ₹)?
15. 15.What amount will ₹40800 grow to in 2 years at 25% per year compound interest (in ₹)?
16. 16.What amount will ₹23700 grow to in 2 years at 20% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹14000 at 15% per year for 1 year, compounded every year (in ₹).
18. 18.Find the compound interest on ₹50700 at 20% per year for 2 years, compounded every year (in ₹).
19. 19.A town has 54900 people. The population grows by 20% every year. What will the population be after 1 year?
20. 20.Find the compound interest on ₹32800 at 12% per year for 1 year, compounded every year (in ₹).
21. 21.Find the compound interest on ₹23200 at 8% per year for 1 year, compounded every year (in ₹).
22. 22.What amount will ₹36900 grow to in 2 years at 20% per year compound interest (in ₹)?
23. 23.What amount will ₹60000 grow to in 2 years at 4% per year compound interest (in ₹)?
24. 24.What amount will ₹19400 grow to in 1 year at 4% per year compound interest (in ₹)?
25. 25.Find the compound interest on ₹12400 at 10% per year for 2 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹43000 at 8% per year for 1 year, compounded every year (in ₹).
27. 27.A scooter is worth ₹60000. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹22500 at 8% per year for 2 years (in ₹)?
29. 29.What amount will ₹12500 grow to in 2 years at 4% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹13100 at 10% per year for 2 years, compounded every year (in ₹).
31. 31.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
32. 32.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
33. 33.A scooter is worth ₹44800. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹36800 at 25% per year for 2 years (in ₹)?
35. 35.What amount will ₹9400 grow to in 1 year at 5% per year compound interest (in ₹)?
36. 36.A scooter is worth ₹7500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
37. 37.Find the compound interest on ₹43500 at 10% per year for 1 year, compounded every year (in ₹).
38. 38.What amount will ₹37200 grow to in 2 years at 5% per year compound interest (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹15600 at 5% per year for 2 years (in ₹)?
40. 40.What amount will ₹3100 grow to in 1 year at 10% per year compound interest (in ₹)?

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