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Simple Interest Worksheet for Kids

Money maths lesson 23: Simple interest · Set 144 · 40 sums
TalentJR

The method (P × R × T ÷ 100): Interest I = P × R × T ÷ 100. Amount after T years = P + I. Turn it round: R = I × 100 ÷ (P × T) and T = I × 100 ÷ (P × R).

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  1. 1.₹1400 earns 10% simple interest per year. In how many years will the interest be ₹140?
  2. 2.₹1600 earns 2% simple interest per year. In how many years will the interest be ₹32?
  3. 3.₹700 earns 6% simple interest per year. In how many years will the interest be ₹84?
  4. 4.Nisha has ₹800. In a piggy bank it stays ₹800. In a bank at 7% simple interest per year, how many rupees more will Nisha have after 4 years?
  5. 5.Saanvi keeps ₹1200 in a bank. After 3 years the simple interest is ₹252. What is the rate of interest per year (in %)?
  6. 6.Priya keeps ₹700 in a bank at 7% simple interest per year. How much money will there be after 3 years (in ₹)?
  7. 7.₹300 earns 7% simple interest per year. In how many years will the interest be ₹42?
  8. 8.₹400 earns 5% simple interest per year. In how many years will the interest be ₹20?
  9. 9.Riya keeps ₹200 in a bank at 2% simple interest per year. How much money will there be after 4 years (in ₹)?
  10. 10.Rahul keeps ₹1000 in a bank at 6% simple interest per year. How much money will there be after 5 years (in ₹)?
  11. 11.₹1800 earns 9% simple interest per year. In how many years will the interest be ₹486?
  12. 12.Gurpreet keeps ₹1200 in a bank at 10% simple interest per year. How many rupees of interest does it earn in 2 years?
  13. 13.Zoya keeps ₹900 in a bank at 9% simple interest per year. How many rupees of interest does it earn in 1 year?
  14. 14.₹1700 earns 3% simple interest per year. In how many years will the interest be ₹102?
  15. 15.Farhan has ₹1800. In a piggy bank it stays ₹1800. In a bank at 4% simple interest per year, how many rupees more will Farhan have after 2 years?
  16. 16.Rahul has ₹1000. In a piggy bank it stays ₹1000. In a bank at 2% simple interest per year, how many rupees more will Rahul have after 4 years?
  17. 17.Ananya has ₹1400. In a piggy bank it stays ₹1400. In a bank at 2% simple interest per year, how many rupees more will Ananya have after 2 years?
  18. 18.Tara keeps ₹700 in a bank at 2% simple interest per year. How much money will there be after 5 years (in ₹)?
  19. 19.Manav keeps ₹1400 in a bank at 7% simple interest per year. How many rupees of interest does it earn in 3 years?
  20. 20.₹300 earns 6% simple interest per year. In how many years will the interest be ₹90?
  21. 21.Farhan keeps ₹400 in a bank. After 3 years the simple interest is ₹24. What is the rate of interest per year (in %)?
  22. 22.Karan keeps ₹1600 in a bank at 6% simple interest per year. How many rupees of interest does it earn in 2 years?
  23. 23.Diya keeps ₹1600 in a bank. After 4 years the simple interest is ₹640. What is the rate of interest per year (in %)?
  24. 24.₹1100 earns 7% simple interest per year. In how many years will the interest be ₹154?
  25. 25.Meera keeps ₹1100 in a bank at 2% simple interest per year. How many rupees of interest does it earn in 4 years?
  26. 26.Gurpreet keeps ₹1900 in a bank at 10% simple interest per year. How many rupees of interest does it earn in 4 years?
  27. 27.Rahul keeps ₹1500 in a bank. After 1 year the simple interest is ₹30. What is the rate of interest per year (in %)?
  28. 28.₹100 earns 6% simple interest per year. In how many years will the interest be ₹18?
  29. 29.₹1000 earns 10% simple interest per year. In how many years will the interest be ₹300?
  30. 30.Priya has ₹400. In a piggy bank it stays ₹400. In a bank at 5% simple interest per year, how many rupees more will Priya have after 1 year?
  31. 31.Gurpreet keeps ₹500 in a bank at 2% simple interest per year. How much money will there be after 4 years (in ₹)?
  32. 32.Aditya keeps ₹1500 in a bank at 7% simple interest per year. How many rupees of interest does it earn in 4 years?
  33. 33.Aditya keeps ₹1200 in a bank at 7% simple interest per year. How much money will there be after 3 years (in ₹)?
  34. 34.Aditya has ₹100. In a piggy bank it stays ₹100. In a bank at 9% simple interest per year, how many rupees more will Aditya have after 5 years?
  35. 35.Arjun has ₹300. In a piggy bank it stays ₹300. In a bank at 4% simple interest per year, how many rupees more will Arjun have after 4 years?
  36. 36.Ananya keeps ₹1600 in a bank. After 3 years the simple interest is ₹144. What is the rate of interest per year (in %)?
  37. 37.Isha keeps ₹1100 in a bank at 9% simple interest per year. How many rupees of interest does it earn in 1 year?
  38. 38.Arjun keeps ₹400 in a bank at 6% simple interest per year. How many rupees of interest does it earn in 5 years?
  39. 39.Nisha has ₹1700. In a piggy bank it stays ₹1700. In a bank at 6% simple interest per year, how many rupees more will Nisha have after 4 years?
  40. 40.₹200 earns 8% simple interest per year. In how many years will the interest be ₹32?

Answer key

  1. 1
  2. 1
  3. 2
  4. 224
  5. 7
  6. 847
  7. 2
  8. 1
  9. 216
  10. 1300
  11. 3
  12. 240
  13. 81
  14. 2
  15. 144
  16. 80
  17. 56
  18. 770
  19. 294
  20. 5
  21. 2
  22. 192
  23. 10
  24. 2
  25. 88
  26. 760
  27. 2
  28. 3
  29. 3
  30. 20
  31. 540
  32. 420
  33. 1452
  34. 45
  35. 48
  36. 3
  37. 99
  38. 120
  39. 408
  40. 2

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