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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 699 · 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. 1.5049² =
  2. 2.489² =
  3. 3.301² =
  4. 4.101² =
  5. 5.6357² =
  6. 6.641² =
  7. 7.852² =
  8. 8.815² =
  9. 9.487² =
  10. 10.2194² =
  11. 11.834² =
  12. 12.470² =
  13. 13.966² =
  14. 14.335² =
  15. 15.641² =
  16. 16.942² =
  17. 17.565² =
  18. 18.817² =
  19. 19.141² =
  20. 20.9459² =
  21. 21.581² =
  22. 22.3179² =
  23. 23.300² =
  24. 24.789² =
  25. 25.567² =
  26. 26.157² =
  27. 27.919² =
  28. 28.448² =
  29. 29.916² =
  30. 30.6573² =
  31. 31.884² =
  32. 32.879² =
  33. 33.9608² =
  34. 34.708² =
  35. 35.205² =
  36. 36.3104² =
  37. 37.8364² =
  38. 38.6469² =
  39. 39.483² =
  40. 40.514² =

Answer key

  1. 25492401
  2. 239121
  3. 90601
  4. 10201
  5. 40411449
  6. 410881
  7. 725904
  8. 664225
  9. 237169
  10. 4813636
  11. 695556
  12. 220900
  13. 933156
  14. 112225
  15. 410881
  16. 887364
  17. 319225
  18. 667489
  19. 19881
  20. 89472681
  21. 337561
  22. 10106041
  23. 90000
  24. 622521
  25. 321489
  26. 24649
  27. 844561
  28. 200704
  29. 839056
  30. 43204329
  31. 781456
  32. 772641
  33. 92313664
  34. 501264
  35. 42025
  36. 9634816
  37. 69956496
  38. 41847961
  39. 233289
  40. 264196

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