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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 640 · 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. 1.769² =
  2. 2.7665² =
  3. 3.310² =
  4. 4.478² =
  5. 5.683² =
  6. 6.8579² =
  7. 7.396² =
  8. 8.8336² =
  9. 9.714² =
  10. 10.7737² =
  11. 11.559² =
  12. 12.776² =
  13. 13.645² =
  14. 14.3002² =
  15. 15.7513² =
  16. 16.245² =
  17. 17.721² =
  18. 18.4999² =
  19. 19.802² =
  20. 20.442² =
  21. 21.556² =
  22. 22.313² =
  23. 23.827² =
  24. 24.8139² =
  25. 25.8568² =
  26. 26.1532² =
  27. 27.930² =
  28. 28.587² =
  29. 29.500² =
  30. 30.600² =
  31. 31.293² =
  32. 32.630² =
  33. 33.662² =
  34. 34.8754² =
  35. 35.9059² =
  36. 36.9355² =
  37. 37.353² =
  38. 38.209² =
  39. 39.661² =
  40. 40.8863² =

Answer key

  1. 591361
  2. 58752225
  3. 96100
  4. 228484
  5. 466489
  6. 73599241
  7. 156816
  8. 69488896
  9. 509796
  10. 59861169
  11. 312481
  12. 602176
  13. 416025
  14. 9012004
  15. 56445169
  16. 60025
  17. 519841
  18. 24990001
  19. 643204
  20. 195364
  21. 309136
  22. 97969
  23. 683929
  24. 66243321
  25. 73410624
  26. 2347024
  27. 864900
  28. 344569
  29. 250000
  30. 360000
  31. 85849
  32. 396900
  33. 438244
  34. 76632516
  35. 82065481
  36. 87516025
  37. 124609
  38. 43681
  39. 436921
  40. 78552769

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