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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 390 · 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. 1.277² =
  2. 2.435² =
  3. 3.4411² =
  4. 4.695² =
  5. 5.206² =
  6. 6.7180² =
  7. 7.5905² =
  8. 8.694² =
  9. 9.782² =
  10. 10.829² =
  11. 11.158² =
  12. 12.357² =
  13. 13.5930² =
  14. 14.723² =
  15. 15.308² =
  16. 16.394² =
  17. 17.727² =
  18. 18.309² =
  19. 19.137² =
  20. 20.2614² =
  21. 21.347² =
  22. 22.8506² =
  23. 23.929² =
  24. 24.326² =
  25. 25.661² =
  26. 26.8330² =
  27. 27.6219² =
  28. 28.795² =
  29. 29.235² =
  30. 30.187² =
  31. 31.315² =
  32. 32.388² =
  33. 33.496² =
  34. 34.637² =
  35. 35.203² =
  36. 36.435² =
  37. 37.356² =
  38. 38.8671² =
  39. 39.637² =
  40. 40.407² =

Answer key

  1. 76729
  2. 189225
  3. 19456921
  4. 483025
  5. 42436
  6. 51552400
  7. 34869025
  8. 481636
  9. 611524
  10. 687241
  11. 24964
  12. 127449
  13. 35164900
  14. 522729
  15. 94864
  16. 155236
  17. 528529
  18. 95481
  19. 18769
  20. 6832996
  21. 120409
  22. 72352036
  23. 863041
  24. 106276
  25. 436921
  26. 69388900
  27. 38675961
  28. 632025
  29. 55225
  30. 34969
  31. 99225
  32. 150544
  33. 246016
  34. 405769
  35. 41209
  36. 189225
  37. 126736
  38. 75186241
  39. 405769
  40. 165649

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