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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 948 · 40 sums
TalentJR

The trick (Dwandwa Yoga): For abc: columns D(a) | D(ab) | D(abc) | D(bc) | D(c). D(a) = a², D(ab) = 2ab, D(abc) = 2ac + b², D(abcd) = 2ad + 2bc. Combine from the right with carries.

NameDateTime takenScore ___ / 40
  1. 1.821² =
  2. 2.2433² =
  3. 3.956² =
  4. 4.8356² =
  5. 5.754² =
  6. 6.7331² =
  7. 7.8378² =
  8. 8.228² =
  9. 9.3937² =
  10. 10.298² =
  11. 11.696² =
  12. 12.188² =
  13. 13.621² =
  14. 14.7290² =
  15. 15.831² =
  16. 16.724² =
  17. 17.4391² =
  18. 18.3015² =
  19. 19.2742² =
  20. 20.519² =
  21. 21.1145² =
  22. 22.358² =
  23. 23.552² =
  24. 24.970² =
  25. 25.685² =
  26. 26.186² =
  27. 27.199² =
  28. 28.1892² =
  29. 29.5025² =
  30. 30.7173² =
  31. 31.725² =
  32. 32.8210² =
  33. 33.366² =
  34. 34.126² =
  35. 35.4650² =
  36. 36.147² =
  37. 37.661² =
  38. 38.971² =
  39. 39.957² =
  40. 40.4855² =

Answer key

  1. 674041
  2. 5919489
  3. 913936
  4. 69822736
  5. 568516
  6. 53743561
  7. 70190884
  8. 51984
  9. 15499969
  10. 88804
  11. 484416
  12. 35344
  13. 385641
  14. 53144100
  15. 690561
  16. 524176
  17. 19280881
  18. 9090225
  19. 7518564
  20. 269361
  21. 1311025
  22. 128164
  23. 304704
  24. 940900
  25. 469225
  26. 34596
  27. 39601
  28. 3579664
  29. 25250625
  30. 51451929
  31. 525625
  32. 67404100
  33. 133956
  34. 15876
  35. 21622500
  36. 21609
  37. 436921
  38. 942841
  39. 915849
  40. 23571025

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