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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 151 · 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. 1.157² =
  2. 2.757² =
  3. 3.563² =
  4. 4.578² =
  5. 5.5066² =
  6. 6.921² =
  7. 7.109² =
  8. 8.343² =
  9. 9.7201² =
  10. 10.8257² =
  11. 11.983² =
  12. 12.7929² =
  13. 13.2120² =
  14. 14.490² =
  15. 15.3593² =
  16. 16.199² =
  17. 17.425² =
  18. 18.837² =
  19. 19.736² =
  20. 20.670² =
  21. 21.155² =
  22. 22.444² =
  23. 23.562² =
  24. 24.1169² =
  25. 25.486² =
  26. 26.496² =
  27. 27.542² =
  28. 28.913² =
  29. 29.607² =
  30. 30.677² =
  31. 31.4086² =
  32. 32.2076² =
  33. 33.7591² =
  34. 34.711² =
  35. 35.838² =
  36. 36.259² =
  37. 37.3427² =
  38. 38.848² =
  39. 39.171² =
  40. 40.111² =

Answer key

  1. 24649
  2. 573049
  3. 316969
  4. 334084
  5. 25664356
  6. 848241
  7. 11881
  8. 117649
  9. 51854401
  10. 68178049
  11. 966289
  12. 62869041
  13. 4494400
  14. 240100
  15. 12909649
  16. 39601
  17. 180625
  18. 700569
  19. 541696
  20. 448900
  21. 24025
  22. 197136
  23. 315844
  24. 1366561
  25. 236196
  26. 246016
  27. 293764
  28. 833569
  29. 368449
  30. 458329
  31. 16695396
  32. 4309776
  33. 57623281
  34. 505521
  35. 702244
  36. 67081
  37. 11744329
  38. 719104
  39. 29241
  40. 12321

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