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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 934 · 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. 1.3732² =
  2. 2.721² =
  3. 3.355² =
  4. 4.375² =
  5. 5.684² =
  6. 6.916² =
  7. 7.657² =
  8. 8.948² =
  9. 9.571² =
  10. 10.396² =
  11. 11.698² =
  12. 12.345² =
  13. 13.697² =
  14. 14.6610² =
  15. 15.434² =
  16. 16.393² =
  17. 17.634² =
  18. 18.771² =
  19. 19.2089² =
  20. 20.724² =
  21. 21.223² =
  22. 22.435² =
  23. 23.247² =
  24. 24.856² =
  25. 25.5334² =
  26. 26.964² =
  27. 27.200² =
  28. 28.5288² =
  29. 29.577² =
  30. 30.585² =
  31. 31.420² =
  32. 32.150² =
  33. 33.8228² =
  34. 34.175² =
  35. 35.9437² =
  36. 36.674² =
  37. 37.334² =
  38. 38.843² =
  39. 39.921² =
  40. 40.3436² =

Answer key

  1. 13927824
  2. 519841
  3. 126025
  4. 140625
  5. 467856
  6. 839056
  7. 431649
  8. 898704
  9. 326041
  10. 156816
  11. 487204
  12. 119025
  13. 485809
  14. 43692100
  15. 188356
  16. 154449
  17. 401956
  18. 594441
  19. 4363921
  20. 524176
  21. 49729
  22. 189225
  23. 61009
  24. 732736
  25. 28451556
  26. 929296
  27. 40000
  28. 27962944
  29. 332929
  30. 342225
  31. 176400
  32. 22500
  33. 67699984
  34. 30625
  35. 89056969
  36. 454276
  37. 111556
  38. 710649
  39. 848241
  40. 11806096

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