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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 614 · 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. 1.1627² =
  2. 2.945² =
  3. 3.767² =
  4. 4.913² =
  5. 5.964² =
  6. 6.5287² =
  7. 7.2917² =
  8. 8.173² =
  9. 9.960² =
  10. 10.2601² =
  11. 11.925² =
  12. 12.294² =
  13. 13.7009² =
  14. 14.658² =
  15. 15.8697² =
  16. 16.852² =
  17. 17.8383² =
  18. 18.4790² =
  19. 19.944² =
  20. 20.978² =
  21. 21.956² =
  22. 22.111² =
  23. 23.2556² =
  24. 24.653² =
  25. 25.9161² =
  26. 26.195² =
  27. 27.1042² =
  28. 28.294² =
  29. 29.281² =
  30. 30.494² =
  31. 31.558² =
  32. 32.119² =
  33. 33.395² =
  34. 34.154² =
  35. 35.588² =
  36. 36.731² =
  37. 37.565² =
  38. 38.8570² =
  39. 39.714² =
  40. 40.6355² =

Answer key

  1. 2647129
  2. 893025
  3. 588289
  4. 833569
  5. 929296
  6. 27952369
  7. 8508889
  8. 29929
  9. 921600
  10. 6765201
  11. 855625
  12. 86436
  13. 49126081
  14. 432964
  15. 75637809
  16. 725904
  17. 70274689
  18. 22944100
  19. 891136
  20. 956484
  21. 913936
  22. 12321
  23. 6533136
  24. 426409
  25. 83923921
  26. 38025
  27. 1085764
  28. 86436
  29. 78961
  30. 244036
  31. 311364
  32. 14161
  33. 156025
  34. 23716
  35. 345744
  36. 534361
  37. 319225
  38. 73444900
  39. 509796
  40. 40386025

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