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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 110 · 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. 1.556² =
  2. 2.318² =
  3. 3.231² =
  4. 4.1114² =
  5. 5.499² =
  6. 6.260² =
  7. 7.715² =
  8. 8.963² =
  9. 9.873² =
  10. 10.345² =
  11. 11.988² =
  12. 12.871² =
  13. 13.769² =
  14. 14.107² =
  15. 15.397² =
  16. 16.762² =
  17. 17.535² =
  18. 18.545² =
  19. 19.973² =
  20. 20.4812² =
  21. 21.593² =
  22. 22.750² =
  23. 23.2484² =
  24. 24.618² =
  25. 25.6176² =
  26. 26.9908² =
  27. 27.259² =
  28. 28.777² =
  29. 29.3484² =
  30. 30.1974² =
  31. 31.1911² =
  32. 32.459² =
  33. 33.6046² =
  34. 34.8609² =
  35. 35.748² =
  36. 36.2769² =
  37. 37.771² =
  38. 38.2625² =
  39. 39.3185² =
  40. 40.657² =

Answer key

  1. 309136
  2. 101124
  3. 53361
  4. 1240996
  5. 249001
  6. 67600
  7. 511225
  8. 927369
  9. 762129
  10. 119025
  11. 976144
  12. 758641
  13. 591361
  14. 11449
  15. 157609
  16. 580644
  17. 286225
  18. 297025
  19. 946729
  20. 23155344
  21. 351649
  22. 562500
  23. 6170256
  24. 381924
  25. 38142976
  26. 98168464
  27. 67081
  28. 603729
  29. 12138256
  30. 3896676
  31. 3651921
  32. 210681
  33. 36554116
  34. 74114881
  35. 559504
  36. 7667361
  37. 594441
  38. 6890625
  39. 10144225
  40. 431649

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