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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 515 · 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. 1.762² =
  2. 2.152² =
  3. 3.813² =
  4. 4.858² =
  5. 5.287² =
  6. 6.7533² =
  7. 7.982² =
  8. 8.6459² =
  9. 9.718² =
  10. 10.3789² =
  11. 11.7294² =
  12. 12.663² =
  13. 13.111² =
  14. 14.279² =
  15. 15.7989² =
  16. 16.501² =
  17. 17.464² =
  18. 18.425² =
  19. 19.912² =
  20. 20.549² =
  21. 21.2898² =
  22. 22.997² =
  23. 23.209² =
  24. 24.137² =
  25. 25.3194² =
  26. 26.9009² =
  27. 27.260² =
  28. 28.178² =
  29. 29.492² =
  30. 30.670² =
  31. 31.4520² =
  32. 32.602² =
  33. 33.666² =
  34. 34.258² =
  35. 35.570² =
  36. 36.946² =
  37. 37.5435² =
  38. 38.4773² =
  39. 39.9529² =
  40. 40.6509² =

Answer key

  1. 580644
  2. 23104
  3. 660969
  4. 736164
  5. 82369
  6. 56746089
  7. 964324
  8. 41718681
  9. 515524
  10. 14356521
  11. 53202436
  12. 439569
  13. 12321
  14. 77841
  15. 63824121
  16. 251001
  17. 215296
  18. 180625
  19. 831744
  20. 301401
  21. 8398404
  22. 994009
  23. 43681
  24. 18769
  25. 10201636
  26. 81162081
  27. 67600
  28. 31684
  29. 242064
  30. 448900
  31. 20430400
  32. 362404
  33. 443556
  34. 66564
  35. 324900
  36. 894916
  37. 29539225
  38. 22781529
  39. 90801841
  40. 42367081

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