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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 389 · 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. 1.199² =
  2. 2.766² =
  3. 3.726² =
  4. 4.1463² =
  5. 5.508² =
  6. 6.645² =
  7. 7.598² =
  8. 8.6036² =
  9. 9.3490² =
  10. 10.518² =
  11. 11.777² =
  12. 12.4793² =
  13. 13.114² =
  14. 14.643² =
  15. 15.3684² =
  16. 16.179² =
  17. 17.358² =
  18. 18.706² =
  19. 19.178² =
  20. 20.562² =
  21. 21.436² =
  22. 22.268² =
  23. 23.134² =
  24. 24.1901² =
  25. 25.172² =
  26. 26.627² =
  27. 27.979² =
  28. 28.551² =
  29. 29.833² =
  30. 30.7233² =
  31. 31.9500² =
  32. 32.471² =
  33. 33.481² =
  34. 34.3396² =
  35. 35.3887² =
  36. 36.3642² =
  37. 37.326² =
  38. 38.734² =
  39. 39.7429² =
  40. 40.330² =

Answer key

  1. 39601
  2. 586756
  3. 527076
  4. 2140369
  5. 258064
  6. 416025
  7. 357604
  8. 36433296
  9. 12180100
  10. 268324
  11. 603729
  12. 22972849
  13. 12996
  14. 413449
  15. 13571856
  16. 32041
  17. 128164
  18. 498436
  19. 31684
  20. 315844
  21. 190096
  22. 71824
  23. 17956
  24. 3613801
  25. 29584
  26. 393129
  27. 958441
  28. 303601
  29. 693889
  30. 52316289
  31. 90250000
  32. 221841
  33. 231361
  34. 11532816
  35. 15108769
  36. 13264164
  37. 106276
  38. 538756
  39. 55190041
  40. 108900

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