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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 511 · 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. 1.841² =
  2. 2.398² =
  3. 3.5113² =
  4. 4.268² =
  5. 5.722² =
  6. 6.892² =
  7. 7.2410² =
  8. 8.169² =
  9. 9.189² =
  10. 10.691² =
  11. 11.5417² =
  12. 12.643² =
  13. 13.402² =
  14. 14.9147² =
  15. 15.463² =
  16. 16.864² =
  17. 17.835² =
  18. 18.424² =
  19. 19.3074² =
  20. 20.347² =
  21. 21.7205² =
  22. 22.640² =
  23. 23.1964² =
  24. 24.488² =
  25. 25.358² =
  26. 26.952² =
  27. 27.9456² =
  28. 28.2721² =
  29. 29.6075² =
  30. 30.1143² =
  31. 31.699² =
  32. 32.510² =
  33. 33.267² =
  34. 34.148² =
  35. 35.141² =
  36. 36.9762² =
  37. 37.3565² =
  38. 38.942² =
  39. 39.183² =
  40. 40.1529² =

Answer key

  1. 707281
  2. 158404
  3. 26142769
  4. 71824
  5. 521284
  6. 795664
  7. 5808100
  8. 28561
  9. 35721
  10. 477481
  11. 29343889
  12. 413449
  13. 161604
  14. 83667609
  15. 214369
  16. 746496
  17. 697225
  18. 179776
  19. 9449476
  20. 120409
  21. 51912025
  22. 409600
  23. 3857296
  24. 238144
  25. 128164
  26. 906304
  27. 89415936
  28. 7403841
  29. 36905625
  30. 1306449
  31. 488601
  32. 260100
  33. 71289
  34. 21904
  35. 19881
  36. 95296644
  37. 12709225
  38. 887364
  39. 33489
  40. 2337841

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