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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 494 · 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. 1.614² =
  2. 2.2115² =
  3. 3.314² =
  4. 4.114² =
  5. 5.8055² =
  6. 6.5329² =
  7. 7.418² =
  8. 8.179² =
  9. 9.214² =
  10. 10.852² =
  11. 11.7400² =
  12. 12.210² =
  13. 13.1077² =
  14. 14.586² =
  15. 15.938² =
  16. 16.2963² =
  17. 17.721² =
  18. 18.3511² =
  19. 19.918² =
  20. 20.835² =
  21. 21.671² =
  22. 22.983² =
  23. 23.8276² =
  24. 24.819² =
  25. 25.254² =
  26. 26.253² =
  27. 27.6713² =
  28. 28.2466² =
  29. 29.110² =
  30. 30.2384² =
  31. 31.641² =
  32. 32.6532² =
  33. 33.1974² =
  34. 34.379² =
  35. 35.627² =
  36. 36.561² =
  37. 37.395² =
  38. 38.601² =
  39. 39.143² =
  40. 40.3499² =

Answer key

  1. 376996
  2. 4473225
  3. 98596
  4. 12996
  5. 64883025
  6. 28398241
  7. 174724
  8. 32041
  9. 45796
  10. 725904
  11. 54760000
  12. 44100
  13. 1159929
  14. 343396
  15. 879844
  16. 8779369
  17. 519841
  18. 12327121
  19. 842724
  20. 697225
  21. 450241
  22. 966289
  23. 68492176
  24. 670761
  25. 64516
  26. 64009
  27. 45064369
  28. 6081156
  29. 12100
  30. 5683456
  31. 410881
  32. 42667024
  33. 3896676
  34. 143641
  35. 393129
  36. 314721
  37. 156025
  38. 361201
  39. 20449
  40. 12243001

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