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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 142 · 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. 1.429² =
  2. 2.4594² =
  3. 3.456² =
  4. 4.428² =
  5. 5.7280² =
  6. 6.168² =
  7. 7.293² =
  8. 8.555² =
  9. 9.312² =
  10. 10.154² =
  11. 11.380² =
  12. 12.472² =
  13. 13.1171² =
  14. 14.6273² =
  15. 15.7509² =
  16. 16.941² =
  17. 17.406² =
  18. 18.5356² =
  19. 19.638² =
  20. 20.678² =
  21. 21.512² =
  22. 22.255² =
  23. 23.2956² =
  24. 24.431² =
  25. 25.343² =
  26. 26.3034² =
  27. 27.755² =
  28. 28.2620² =
  29. 29.423² =
  30. 30.402² =
  31. 31.1046² =
  32. 32.701² =
  33. 33.7253² =
  34. 34.584² =
  35. 35.326² =
  36. 36.645² =
  37. 37.811² =
  38. 38.852² =
  39. 39.338² =
  40. 40.169² =

Answer key

  1. 184041
  2. 21104836
  3. 207936
  4. 183184
  5. 52998400
  6. 28224
  7. 85849
  8. 308025
  9. 97344
  10. 23716
  11. 144400
  12. 222784
  13. 1371241
  14. 39350529
  15. 56385081
  16. 885481
  17. 164836
  18. 28686736
  19. 407044
  20. 459684
  21. 262144
  22. 65025
  23. 8737936
  24. 185761
  25. 117649
  26. 9205156
  27. 570025
  28. 6864400
  29. 178929
  30. 161604
  31. 1094116
  32. 491401
  33. 52606009
  34. 341056
  35. 106276
  36. 416025
  37. 657721
  38. 725904
  39. 114244
  40. 28561

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