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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 750 · 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. 1.890² =
  2. 2.342² =
  3. 3.106² =
  4. 4.5072² =
  5. 5.3935² =
  6. 6.451² =
  7. 7.219² =
  8. 8.346² =
  9. 9.8195² =
  10. 10.934² =
  11. 11.177² =
  12. 12.567² =
  13. 13.752² =
  14. 14.162² =
  15. 15.733² =
  16. 16.380² =
  17. 17.415² =
  18. 18.9180² =
  19. 19.767² =
  20. 20.6513² =
  21. 21.694² =
  22. 22.338² =
  23. 23.394² =
  24. 24.202² =
  25. 25.884² =
  26. 26.6228² =
  27. 27.7269² =
  28. 28.2239² =
  29. 29.793² =
  30. 30.140² =
  31. 31.562² =
  32. 32.3500² =
  33. 33.172² =
  34. 34.382² =
  35. 35.455² =
  36. 36.999² =
  37. 37.371² =
  38. 38.690² =
  39. 39.601² =
  40. 40.7913² =

Answer key

  1. 792100
  2. 116964
  3. 11236
  4. 25725184
  5. 15484225
  6. 203401
  7. 47961
  8. 119716
  9. 67158025
  10. 872356
  11. 31329
  12. 321489
  13. 565504
  14. 26244
  15. 537289
  16. 144400
  17. 172225
  18. 84272400
  19. 588289
  20. 42419169
  21. 481636
  22. 114244
  23. 155236
  24. 40804
  25. 781456
  26. 38787984
  27. 52838361
  28. 5013121
  29. 628849
  30. 19600
  31. 315844
  32. 12250000
  33. 29584
  34. 145924
  35. 207025
  36. 998001
  37. 137641
  38. 476100
  39. 361201
  40. 62615569

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