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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 873 · 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. 1.812² =
  2. 2.680² =
  3. 3.306² =
  4. 4.639² =
  5. 5.898² =
  6. 6.3875² =
  7. 7.772² =
  8. 8.836² =
  9. 9.451² =
  10. 10.2554² =
  11. 11.267² =
  12. 12.671² =
  13. 13.7574² =
  14. 14.184² =
  15. 15.6894² =
  16. 16.524² =
  17. 17.639² =
  18. 18.2951² =
  19. 19.602² =
  20. 20.518² =
  21. 21.362² =
  22. 22.2787² =
  23. 23.779² =
  24. 24.870² =
  25. 25.730² =
  26. 26.376² =
  27. 27.1935² =
  28. 28.934² =
  29. 29.865² =
  30. 30.190² =
  31. 31.340² =
  32. 32.493² =
  33. 33.886² =
  34. 34.2588² =
  35. 35.866² =
  36. 36.797² =
  37. 37.568² =
  38. 38.3850² =
  39. 39.8839² =
  40. 40.124² =

Answer key

  1. 659344
  2. 462400
  3. 93636
  4. 408321
  5. 806404
  6. 15015625
  7. 595984
  8. 698896
  9. 203401
  10. 6522916
  11. 71289
  12. 450241
  13. 57365476
  14. 33856
  15. 47527236
  16. 274576
  17. 408321
  18. 8708401
  19. 362404
  20. 268324
  21. 131044
  22. 7767369
  23. 606841
  24. 756900
  25. 532900
  26. 141376
  27. 3744225
  28. 872356
  29. 748225
  30. 36100
  31. 115600
  32. 243049
  33. 784996
  34. 6697744
  35. 749956
  36. 635209
  37. 322624
  38. 14822500
  39. 78127921
  40. 15376

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