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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 235 · 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. 1.9181² =
  2. 2.835² =
  3. 3.595² =
  4. 4.197² =
  5. 5.318² =
  6. 6.535² =
  7. 7.800² =
  8. 8.767² =
  9. 9.3729² =
  10. 10.2726² =
  11. 11.540² =
  12. 12.105² =
  13. 13.9132² =
  14. 14.103² =
  15. 15.6508² =
  16. 16.3425² =
  17. 17.601² =
  18. 18.428² =
  19. 19.141² =
  20. 20.896² =
  21. 21.1281² =
  22. 22.112² =
  23. 23.688² =
  24. 24.385² =
  25. 25.190² =
  26. 26.649² =
  27. 27.551² =
  28. 28.272² =
  29. 29.161² =
  30. 30.8287² =
  31. 31.767² =
  32. 32.9478² =
  33. 33.864² =
  34. 34.169² =
  35. 35.520² =
  36. 36.808² =
  37. 37.2583² =
  38. 38.9967² =
  39. 39.278² =
  40. 40.8864² =

Answer key

  1. 84290761
  2. 697225
  3. 354025
  4. 38809
  5. 101124
  6. 286225
  7. 640000
  8. 588289
  9. 13905441
  10. 7431076
  11. 291600
  12. 11025
  13. 83393424
  14. 10609
  15. 42354064
  16. 11730625
  17. 361201
  18. 183184
  19. 19881
  20. 802816
  21. 1640961
  22. 12544
  23. 473344
  24. 148225
  25. 36100
  26. 421201
  27. 303601
  28. 73984
  29. 25921
  30. 68674369
  31. 588289
  32. 89832484
  33. 746496
  34. 28561
  35. 270400
  36. 652864
  37. 6671889
  38. 99341089
  39. 77284
  40. 78570496

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