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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 190 · 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. 1.543² =
  2. 2.992² =
  3. 3.9393² =
  4. 4.169² =
  5. 5.7995² =
  6. 6.420² =
  7. 7.136² =
  8. 8.5438² =
  9. 9.4495² =
  10. 10.954² =
  11. 11.9357² =
  12. 12.462² =
  13. 13.411² =
  14. 14.5230² =
  15. 15.894² =
  16. 16.545² =
  17. 17.833² =
  18. 18.747² =
  19. 19.1173² =
  20. 20.327² =
  21. 21.429² =
  22. 22.119² =
  23. 23.157² =
  24. 24.399² =
  25. 25.976² =
  26. 26.892² =
  27. 27.398² =
  28. 28.297² =
  29. 29.471² =
  30. 30.561² =
  31. 31.5037² =
  32. 32.3562² =
  33. 33.3793² =
  34. 34.7909² =
  35. 35.4272² =
  36. 36.760² =
  37. 37.475² =
  38. 38.834² =
  39. 39.875² =
  40. 40.7614² =

Answer key

  1. 294849
  2. 984064
  3. 88228449
  4. 28561
  5. 63920025
  6. 176400
  7. 18496
  8. 29571844
  9. 20205025
  10. 910116
  11. 87553449
  12. 213444
  13. 168921
  14. 27352900
  15. 799236
  16. 297025
  17. 693889
  18. 558009
  19. 1375929
  20. 106929
  21. 184041
  22. 14161
  23. 24649
  24. 159201
  25. 952576
  26. 795664
  27. 158404
  28. 88209
  29. 221841
  30. 314721
  31. 25371369
  32. 12687844
  33. 14386849
  34. 62552281
  35. 18249984
  36. 577600
  37. 225625
  38. 695556
  39. 765625
  40. 57972996

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