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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 84 · 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. 1.476² =
  2. 2.748² =
  3. 3.455² =
  4. 4.102² =
  5. 5.922² =
  6. 6.9933² =
  7. 7.732² =
  8. 8.911² =
  9. 9.168² =
  10. 10.151² =
  11. 11.249² =
  12. 12.1341² =
  13. 13.331² =
  14. 14.749² =
  15. 15.232² =
  16. 16.210² =
  17. 17.278² =
  18. 18.6228² =
  19. 19.203² =
  20. 20.872² =
  21. 21.330² =
  22. 22.3379² =
  23. 23.933² =
  24. 24.841² =
  25. 25.897² =
  26. 26.4805² =
  27. 27.3401² =
  28. 28.160² =
  29. 29.461² =
  30. 30.977² =
  31. 31.4806² =
  32. 32.579² =
  33. 33.4098² =
  34. 34.159² =
  35. 35.195² =
  36. 36.149² =
  37. 37.808² =
  38. 38.720² =
  39. 39.586² =
  40. 40.813² =

Answer key

  1. 226576
  2. 559504
  3. 207025
  4. 10404
  5. 850084
  6. 98664489
  7. 535824
  8. 829921
  9. 28224
  10. 22801
  11. 62001
  12. 1798281
  13. 109561
  14. 561001
  15. 53824
  16. 44100
  17. 77284
  18. 38787984
  19. 41209
  20. 760384
  21. 108900
  22. 11417641
  23. 870489
  24. 707281
  25. 804609
  26. 23088025
  27. 11566801
  28. 25600
  29. 212521
  30. 954529
  31. 23097636
  32. 335241
  33. 16793604
  34. 25281
  35. 38025
  36. 22201
  37. 652864
  38. 518400
  39. 343396
  40. 660969

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