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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 35 · 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. 1.166² =
  2. 2.802² =
  3. 3.767² =
  4. 4.5973² =
  5. 5.411² =
  6. 6.898² =
  7. 7.721² =
  8. 8.8102² =
  9. 9.225² =
  10. 10.376² =
  11. 11.962² =
  12. 12.3526² =
  13. 13.8228² =
  14. 14.516² =
  15. 15.481² =
  16. 16.750² =
  17. 17.856² =
  18. 18.327² =
  19. 19.271² =
  20. 20.684² =
  21. 21.397² =
  22. 22.202² =
  23. 23.834² =
  24. 24.666² =
  25. 25.712² =
  26. 26.330² =
  27. 27.941² =
  28. 28.912² =
  29. 29.365² =
  30. 30.350² =
  31. 31.332² =
  32. 32.156² =
  33. 33.198² =
  34. 34.101² =
  35. 35.888² =
  36. 36.219² =
  37. 37.8091² =
  38. 38.736² =
  39. 39.8898² =
  40. 40.852² =

Answer key

  1. 27556
  2. 643204
  3. 588289
  4. 35676729
  5. 168921
  6. 806404
  7. 519841
  8. 65642404
  9. 50625
  10. 141376
  11. 925444
  12. 12432676
  13. 67699984
  14. 266256
  15. 231361
  16. 562500
  17. 732736
  18. 106929
  19. 73441
  20. 467856
  21. 157609
  22. 40804
  23. 695556
  24. 443556
  25. 506944
  26. 108900
  27. 885481
  28. 831744
  29. 133225
  30. 122500
  31. 110224
  32. 24336
  33. 39204
  34. 10201
  35. 788544
  36. 47961
  37. 65464281
  38. 541696
  39. 79174404
  40. 725904

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