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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 795 · 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. 1.402² =
  2. 2.505² =
  3. 3.765² =
  4. 4.237² =
  5. 5.7721² =
  6. 6.154² =
  7. 7.450² =
  8. 8.781² =
  9. 9.899² =
  10. 10.415² =
  11. 11.605² =
  12. 12.173² =
  13. 13.148² =
  14. 14.807² =
  15. 15.945² =
  16. 16.691² =
  17. 17.1622² =
  18. 18.2924² =
  19. 19.178² =
  20. 20.358² =
  21. 21.127² =
  22. 22.537² =
  23. 23.212² =
  24. 24.157² =
  25. 25.6487² =
  26. 26.451² =
  27. 27.891² =
  28. 28.404² =
  29. 29.732² =
  30. 30.459² =
  31. 31.6233² =
  32. 32.247² =
  33. 33.7878² =
  34. 34.4044² =
  35. 35.557² =
  36. 36.713² =
  37. 37.187² =
  38. 38.7710² =
  39. 39.220² =
  40. 40.759² =

Answer key

  1. 161604
  2. 255025
  3. 585225
  4. 56169
  5. 59613841
  6. 23716
  7. 202500
  8. 609961
  9. 808201
  10. 172225
  11. 366025
  12. 29929
  13. 21904
  14. 651249
  15. 893025
  16. 477481
  17. 2630884
  18. 8549776
  19. 31684
  20. 128164
  21. 16129
  22. 288369
  23. 44944
  24. 24649
  25. 42081169
  26. 203401
  27. 793881
  28. 163216
  29. 535824
  30. 210681
  31. 38850289
  32. 61009
  33. 62062884
  34. 16353936
  35. 310249
  36. 508369
  37. 34969
  38. 59444100
  39. 48400
  40. 576081

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