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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 187 · 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. 1.694² =
  2. 2.118² =
  3. 3.227² =
  4. 4.5353² =
  5. 5.757² =
  6. 6.258² =
  7. 7.447² =
  8. 8.362² =
  9. 9.347² =
  10. 10.505² =
  11. 11.536² =
  12. 12.866² =
  13. 13.2250² =
  14. 14.193² =
  15. 15.386² =
  16. 16.272² =
  17. 17.852² =
  18. 18.8627² =
  19. 19.2268² =
  20. 20.785² =
  21. 21.9843² =
  22. 22.2551² =
  23. 23.404² =
  24. 24.926² =
  25. 25.586² =
  26. 26.392² =
  27. 27.6811² =
  28. 28.4687² =
  29. 29.806² =
  30. 30.692² =
  31. 31.686² =
  32. 32.9898² =
  33. 33.227² =
  34. 34.711² =
  35. 35.488² =
  36. 36.787² =
  37. 37.348² =
  38. 38.9083² =
  39. 39.710² =
  40. 40.9437² =

Answer key

  1. 481636
  2. 13924
  3. 51529
  4. 28654609
  5. 573049
  6. 66564
  7. 199809
  8. 131044
  9. 120409
  10. 255025
  11. 287296
  12. 749956
  13. 5062500
  14. 37249
  15. 148996
  16. 73984
  17. 725904
  18. 74425129
  19. 5143824
  20. 616225
  21. 96884649
  22. 6507601
  23. 163216
  24. 857476
  25. 343396
  26. 153664
  27. 46389721
  28. 21967969
  29. 649636
  30. 478864
  31. 470596
  32. 97970404
  33. 51529
  34. 505521
  35. 238144
  36. 619369
  37. 121104
  38. 82500889
  39. 504100
  40. 89056969

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