Class 8 Maths Worksheet: Compound Interest
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.
NameDateTime takenScore ___ / 40
- 1.What is the difference between the compound interest and the simple interest on ₹58400 at 15% per year for 2 years (in ₹)?
- 2.Find the compound interest on ₹6500 at 15% per year for 1 year, compounded every year (in ₹).
- 3.What amount will ₹30000 grow to in 3 years at 20% per year compound interest (in ₹)?
- 4.A town has 46300 people. The population grows by 4% every year. What will the population be after 1 year?
- 5.What is the difference between the compound interest and the simple interest on ₹20400 at 25% per year for 2 years (in ₹)?
- 6.What is the difference between the compound interest and the simple interest on ₹42500 at 8% per year for 2 years (in ₹)?
- 7.Find the compound interest on ₹22000 at 25% per year for 2 years, compounded every year (in ₹).
- 8.Find the compound interest on ₹8200 at 15% per year for 1 year, compounded every year (in ₹).
- 9.What amount will ₹14400 grow to in 3 years at 25% per year compound interest (in ₹)?
- 10.What is the difference between the compound interest and the simple interest on ₹7500 at 12% per year for 2 years (in ₹)?
- 11.Find the compound interest on ₹53600 at 10% per year for 2 years, compounded every year (in ₹).
- 12.What is the difference between the compound interest and the simple interest on ₹59200 at 15% per year for 2 years (in ₹)?
- 13.What amount will ₹19300 grow to in 1 year at 8% per year compound interest (in ₹)?
- 14.What amount will ₹17500 grow to in 2 years at 8% per year compound interest (in ₹)?
- 15.What is the difference between the compound interest and the simple interest on ₹5600 at 25% per year for 2 years (in ₹)?
- 16.Find the compound interest on ₹33600 at 25% per year for 3 years, compounded every year (in ₹).
- 17.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
- 18.Find the compound interest on ₹22500 at 12% per year for 2 years, compounded every year (in ₹).
- 19.Find the compound interest on ₹22100 at 10% per year for 1 year, compounded every year (in ₹).
- 20.A town has 2500 people. The population grows by 8% every year. What will the population be after 2 years?
- 21.A town has 48000 people. The population grows by 15% every year. What will the population be after 3 years?
- 22.A scooter is worth ₹44000. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
- 23.What is the difference between the compound interest and the simple interest on ₹52500 at 4% per year for 2 years (in ₹)?
- 24.A scooter is worth ₹15200. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
- 25.A town has 20000 people. The population grows by 4% every year. What will the population be after 2 years?
- 26.What amount will ₹5000 grow to in 3 years at 20% per year compound interest (in ₹)?
- 27.What is the difference between the compound interest and the simple interest on ₹57500 at 12% per year for 2 years (in ₹)?
- 28.What is the difference between the compound interest and the simple interest on ₹5000 at 4% per year for 2 years (in ₹)?
- 29.A scooter is worth ₹55000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
- 30.Find the compound interest on ₹48800 at 5% per year for 2 years, compounded every year (in ₹).
- 31.A scooter is worth ₹39100. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
- 32.Find the compound interest on ₹46000 at 20% per year for 3 years, compounded every year (in ₹).
- 33.Find the compound interest on ₹41600 at 25% per year for 2 years, compounded every year (in ₹).
- 34.What is the difference between the compound interest and the simple interest on ₹5000 at 8% per year for 2 years (in ₹)?
- 35.What is the difference between the compound interest and the simple interest on ₹22500 at 12% per year for 2 years (in ₹)?
- 36.What amount will ₹58400 grow to in 2 years at 10% per year compound interest (in ₹)?
- 37.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
- 38.A scooter is worth ₹60000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
- 39.What amount will ₹8000 grow to in 3 years at 20% per year compound interest (in ₹)?
- 40.Find the compound interest on ₹42900 at 8% per year for 1 year, compounded every year (in ₹).
Answer key
- 1314
- 975
- 51840
- 48152
- 1275
- 272
- 12375
- 1230
- 28125
- 108
- 11256
- 1332
- 20844
- 20412
- 350
- 32025
- 48668
- 5724
- 2210
- 2916
- 73002
- 24750
- 84
- 13718
- 21632
- 8640
- 828
- 8
- 28160
- 5002
- 25024
- 33488
- 23400
- 32
- 324
- 70664
- 6305
- 46464
- 13824
- 3432
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