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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 103 · 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. 1.166² =
  2. 2.428² =
  3. 3.132² =
  4. 4.357² =
  5. 5.536² =
  6. 6.1337² =
  7. 7.3071² =
  8. 8.7107² =
  9. 9.309² =
  10. 10.664² =
  11. 11.4276² =
  12. 12.144² =
  13. 13.466² =
  14. 14.170² =
  15. 15.433² =
  16. 16.2540² =
  17. 17.351² =
  18. 18.171² =
  19. 19.792² =
  20. 20.166² =
  21. 21.794² =
  22. 22.185² =
  23. 23.788² =
  24. 24.952² =
  25. 25.563² =
  26. 26.138² =
  27. 27.733² =
  28. 28.9180² =
  29. 29.715² =
  30. 30.3540² =
  31. 31.8246² =
  32. 32.141² =
  33. 33.419² =
  34. 34.1160² =
  35. 35.3545² =
  36. 36.776² =
  37. 37.749² =
  38. 38.3996² =
  39. 39.1881² =
  40. 40.960² =

Answer key

  1. 27556
  2. 183184
  3. 17424
  4. 127449
  5. 287296
  6. 1787569
  7. 9431041
  8. 50509449
  9. 95481
  10. 440896
  11. 18284176
  12. 20736
  13. 217156
  14. 28900
  15. 187489
  16. 6451600
  17. 123201
  18. 29241
  19. 627264
  20. 27556
  21. 630436
  22. 34225
  23. 620944
  24. 906304
  25. 316969
  26. 19044
  27. 537289
  28. 84272400
  29. 511225
  30. 12531600
  31. 67996516
  32. 19881
  33. 175561
  34. 1345600
  35. 12567025
  36. 602176
  37. 561001
  38. 15968016
  39. 3538161
  40. 921600

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