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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 357 · 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. 1.191² =
  2. 2.523² =
  3. 3.399² =
  4. 4.935² =
  5. 5.166² =
  6. 6.558² =
  7. 7.8173² =
  8. 8.7941² =
  9. 9.7125² =
  10. 10.374² =
  11. 11.227² =
  12. 12.328² =
  13. 13.399² =
  14. 14.249² =
  15. 15.282² =
  16. 16.236² =
  17. 17.740² =
  18. 18.804² =
  19. 19.853² =
  20. 20.420² =
  21. 21.6848² =
  22. 22.644² =
  23. 23.763² =
  24. 24.879² =
  25. 25.5104² =
  26. 26.995² =
  27. 27.6471² =
  28. 28.826² =
  29. 29.995² =
  30. 30.248² =
  31. 31.876² =
  32. 32.1645² =
  33. 33.6250² =
  34. 34.132² =
  35. 35.168² =
  36. 36.690² =
  37. 37.971² =
  38. 38.859² =
  39. 39.423² =
  40. 40.398² =

Answer key

  1. 36481
  2. 273529
  3. 159201
  4. 874225
  5. 27556
  6. 311364
  7. 66797929
  8. 63059481
  9. 50765625
  10. 139876
  11. 51529
  12. 107584
  13. 159201
  14. 62001
  15. 79524
  16. 55696
  17. 547600
  18. 646416
  19. 727609
  20. 176400
  21. 46895104
  22. 414736
  23. 582169
  24. 772641
  25. 26050816
  26. 990025
  27. 41873841
  28. 682276
  29. 990025
  30. 61504
  31. 767376
  32. 2706025
  33. 39062500
  34. 17424
  35. 28224
  36. 476100
  37. 942841
  38. 737881
  39. 178929
  40. 158404

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