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.Find the compound interest on ₹50300 at 10% per year for 1 year, compounded every year (in ₹).
- 2.A scooter is worth ₹48000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
- 3.What is the difference between the compound interest and the simple interest on ₹49200 at 15% per year for 2 years (in ₹)?
- 4.What is the difference between the compound interest and the simple interest on ₹22500 at 4% per year for 2 years (in ₹)?
- 5.Find the compound interest on ₹38000 at 15% per year for 2 years, compounded every year (in ₹).
- 6.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
- 7.What is the difference between the compound interest and the simple interest on ₹12500 at 8% per year for 2 years (in ₹)?
- 8.What amount will ₹16800 grow to in 2 years at 15% per year compound interest (in ₹)?
- 9.What is the difference between the compound interest and the simple interest on ₹22200 at 10% per year for 2 years (in ₹)?
- 10.What is the difference between the compound interest and the simple interest on ₹56800 at 5% per year for 2 years (in ₹)?
- 11.What amount will ₹9100 grow to in 1 year at 20% per year compound interest (in ₹)?
- 12.Find the compound interest on ₹19900 at 20% per year for 1 year, compounded every year (in ₹).
- 13.Find the compound interest on ₹6000 at 25% per year for 2 years, compounded every year (in ₹).
- 14.What is the difference between the compound interest and the simple interest on ₹15000 at 8% per year for 2 years (in ₹)?
- 15.Find the compound interest on ₹43800 at 12% per year for 1 year, compounded every year (in ₹).
- 16.What is the difference between the compound interest and the simple interest on ₹50800 at 15% per year for 2 years (in ₹)?
- 17.Find the compound interest on ₹26200 at 25% per year for 1 year, compounded every year (in ₹).
- 18.Find the compound interest on ₹43100 at 5% per year for 1 year, compounded every year (in ₹).
- 19.A scooter is worth ₹50000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
- 20.What is the difference between the compound interest and the simple interest on ₹12500 at 4% per year for 2 years (in ₹)?
- 21.What amount will ₹17200 grow to in 2 years at 15% per year compound interest (in ₹)?
- 22.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
- 23.What amount will ₹35000 grow to in 2 years at 12% per year compound interest (in ₹)?
- 24.What amount will ₹11200 grow to in 3 years at 25% per year compound interest (in ₹)?
- 25.Find the compound interest on ₹16000 at 5% per year for 2 years, compounded every year (in ₹).
- 26.A town has 51600 people. The population grows by 12% every year. What will the population be after 1 year?
- 27.Find the compound interest on ₹21700 at 25% per year for 1 year, compounded every year (in ₹).
- 28.What amount will ₹21400 grow to in 1 year at 10% per year compound interest (in ₹)?
- 29.Find the compound interest on ₹33000 at 10% per year for 3 years, compounded every year (in ₹).
- 30.A town has 14800 people. The population grows by 25% every year. What will the population be after 2 years?
- 31.What is the difference between the compound interest and the simple interest on ₹28800 at 10% per year for 2 years (in ₹)?
- 32.A scooter is worth ₹32500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
- 33.Find the compound interest on ₹45100 at 10% per year for 2 years, compounded every year (in ₹).
- 34.Find the compound interest on ₹35800 at 15% per year for 1 year, compounded every year (in ₹).
- 35.What is the difference between the compound interest and the simple interest on ₹8000 at 25% per year for 2 years (in ₹)?
- 36.Find the compound interest on ₹23200 at 5% per year for 2 years, compounded every year (in ₹).
- 37.A scooter is worth ₹26500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
- 38.A scooter is worth ₹22500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
- 39.What amount will ₹23800 grow to in 1 year at 10% per year compound interest (in ₹)?
- 40.Find the compound interest on ₹51600 at 5% per year for 2 years, compounded every year (in ₹).
Answer key
- 5030
- 29478
- 1107
- 36
- 12255
- 16
- 80
- 22218
- 222
- 142
- 10920
- 3980
- 3375
- 96
- 5256
- 1143
- 6550
- 2155
- 42320
- 20
- 22747
- 8827
- 43904
- 21875
- 1640
- 57792
- 5425
- 23540
- 10923
- 23125
- 288
- 29952
- 9471
- 5370
- 500
- 2378
- 13568
- 20736
- 26180
- 5289
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