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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 153 · 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. 1.9025² =
  2. 2.212² =
  3. 3.961² =
  4. 4.713² =
  5. 5.380² =
  6. 6.879² =
  7. 7.610² =
  8. 8.351² =
  9. 9.671² =
  10. 10.5026² =
  11. 11.786² =
  12. 12.450² =
  13. 13.567² =
  14. 14.375² =
  15. 15.393² =
  16. 16.827² =
  17. 17.2379² =
  18. 18.308² =
  19. 19.400² =
  20. 20.241² =
  21. 21.267² =
  22. 22.9477² =
  23. 23.6158² =
  24. 24.553² =
  25. 25.722² =
  26. 26.166² =
  27. 27.341² =
  28. 28.6074² =
  29. 29.8577² =
  30. 30.238² =
  31. 31.248² =
  32. 32.236² =
  33. 33.669² =
  34. 34.593² =
  35. 35.704² =
  36. 36.487² =
  37. 37.570² =
  38. 38.961² =
  39. 39.201² =
  40. 40.2119² =

Answer key

  1. 81450625
  2. 44944
  3. 923521
  4. 508369
  5. 144400
  6. 772641
  7. 372100
  8. 123201
  9. 450241
  10. 25260676
  11. 617796
  12. 202500
  13. 321489
  14. 140625
  15. 154449
  16. 683929
  17. 5659641
  18. 94864
  19. 160000
  20. 58081
  21. 71289
  22. 89813529
  23. 37920964
  24. 305809
  25. 521284
  26. 27556
  27. 116281
  28. 36893476
  29. 73564929
  30. 56644
  31. 61504
  32. 55696
  33. 447561
  34. 351649
  35. 495616
  36. 237169
  37. 324900
  38. 923521
  39. 40401
  40. 4490161

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