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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 18 · 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. 1.237² =
  2. 2.907² =
  3. 3.3794² =
  4. 4.162² =
  5. 5.871² =
  6. 6.761² =
  7. 7.5251² =
  8. 8.5216² =
  9. 9.3316² =
  10. 10.218² =
  11. 11.273² =
  12. 12.9021² =
  13. 13.249² =
  14. 14.240² =
  15. 15.3787² =
  16. 16.671² =
  17. 17.9279² =
  18. 18.905² =
  19. 19.5989² =
  20. 20.1379² =
  21. 21.356² =
  22. 22.7303² =
  23. 23.110² =
  24. 24.358² =
  25. 25.990² =
  26. 26.181² =
  27. 27.189² =
  28. 28.658² =
  29. 29.116² =
  30. 30.281² =
  31. 31.1035² =
  32. 32.9438² =
  33. 33.231² =
  34. 34.657² =
  35. 35.5474² =
  36. 36.918² =
  37. 37.788² =
  38. 38.2474² =
  39. 39.749² =
  40. 40.320² =

Answer key

  1. 56169
  2. 822649
  3. 14394436
  4. 26244
  5. 758641
  6. 579121
  7. 27573001
  8. 27206656
  9. 10995856
  10. 47524
  11. 74529
  12. 81378441
  13. 62001
  14. 57600
  15. 14341369
  16. 450241
  17. 86099841
  18. 819025
  19. 35868121
  20. 1901641
  21. 126736
  22. 53333809
  23. 12100
  24. 128164
  25. 980100
  26. 32761
  27. 35721
  28. 432964
  29. 13456
  30. 78961
  31. 1071225
  32. 89075844
  33. 53361
  34. 431649
  35. 29964676
  36. 842724
  37. 620944
  38. 6120676
  39. 561001
  40. 102400

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