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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 408 · 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. 1.590² =
  2. 2.813² =
  3. 3.109² =
  4. 4.657² =
  5. 5.813² =
  6. 6.370² =
  7. 7.6765² =
  8. 8.105² =
  9. 9.921² =
  10. 10.365² =
  11. 11.600² =
  12. 12.6807² =
  13. 13.654² =
  14. 14.9260² =
  15. 15.430² =
  16. 16.378² =
  17. 17.823² =
  18. 18.644² =
  19. 19.366² =
  20. 20.732² =
  21. 21.827² =
  22. 22.632² =
  23. 23.1577² =
  24. 24.149² =
  25. 25.1566² =
  26. 26.8951² =
  27. 27.233² =
  28. 28.201² =
  29. 29.3320² =
  30. 30.924² =
  31. 31.338² =
  32. 32.704² =
  33. 33.909² =
  34. 34.2790² =
  35. 35.696² =
  36. 36.4553² =
  37. 37.250² =
  38. 38.635² =
  39. 39.495² =
  40. 40.4272² =

Answer key

  1. 348100
  2. 660969
  3. 11881
  4. 431649
  5. 660969
  6. 136900
  7. 45765225
  8. 11025
  9. 848241
  10. 133225
  11. 360000
  12. 46335249
  13. 427716
  14. 85747600
  15. 184900
  16. 142884
  17. 677329
  18. 414736
  19. 133956
  20. 535824
  21. 683929
  22. 399424
  23. 2486929
  24. 22201
  25. 2452356
  26. 80120401
  27. 54289
  28. 40401
  29. 11022400
  30. 853776
  31. 114244
  32. 495616
  33. 826281
  34. 7784100
  35. 484416
  36. 20729809
  37. 62500
  38. 403225
  39. 245025
  40. 18249984

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