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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 675 · 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. 1.1722² =
  2. 2.748² =
  3. 3.376² =
  4. 4.210² =
  5. 5.643² =
  6. 6.615² =
  7. 7.215² =
  8. 8.783² =
  9. 9.2256² =
  10. 10.849² =
  11. 11.502² =
  12. 12.219² =
  13. 13.626² =
  14. 14.365² =
  15. 15.424² =
  16. 16.180² =
  17. 17.830² =
  18. 18.619² =
  19. 19.159² =
  20. 20.326² =
  21. 21.239² =
  22. 22.848² =
  23. 23.839² =
  24. 24.271² =
  25. 25.216² =
  26. 26.577² =
  27. 27.397² =
  28. 28.701² =
  29. 29.7682² =
  30. 30.618² =
  31. 31.851² =
  32. 32.106² =
  33. 33.277² =
  34. 34.273² =
  35. 35.318² =
  36. 36.147² =
  37. 37.569² =
  38. 38.6706² =
  39. 39.798² =
  40. 40.967² =

Answer key

  1. 2965284
  2. 559504
  3. 141376
  4. 44100
  5. 413449
  6. 378225
  7. 46225
  8. 613089
  9. 5089536
  10. 720801
  11. 252004
  12. 47961
  13. 391876
  14. 133225
  15. 179776
  16. 32400
  17. 688900
  18. 383161
  19. 25281
  20. 106276
  21. 57121
  22. 719104
  23. 703921
  24. 73441
  25. 46656
  26. 332929
  27. 157609
  28. 491401
  29. 59013124
  30. 381924
  31. 724201
  32. 11236
  33. 76729
  34. 74529
  35. 101124
  36. 21609
  37. 323761
  38. 44970436
  39. 636804
  40. 935089

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