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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 507 · 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. 1.613² =
  2. 2.8571² =
  3. 3.9747² =
  4. 4.584² =
  5. 5.837² =
  6. 6.421² =
  7. 7.495² =
  8. 8.125² =
  9. 9.697² =
  10. 10.692² =
  11. 11.656² =
  12. 12.815² =
  13. 13.642² =
  14. 14.846² =
  15. 15.763² =
  16. 16.4937² =
  17. 17.454² =
  18. 18.288² =
  19. 19.7223² =
  20. 20.979² =
  21. 21.269² =
  22. 22.983² =
  23. 23.663² =
  24. 24.925² =
  25. 25.568² =
  26. 26.448² =
  27. 27.7769² =
  28. 28.9546² =
  29. 29.201² =
  30. 30.880² =
  31. 31.5486² =
  32. 32.6812² =
  33. 33.571² =
  34. 34.283² =
  35. 35.581² =
  36. 36.3506² =
  37. 37.169² =
  38. 38.320² =
  39. 39.643² =
  40. 40.566² =

Answer key

  1. 375769
  2. 73462041
  3. 95004009
  4. 341056
  5. 700569
  6. 177241
  7. 245025
  8. 15625
  9. 485809
  10. 478864
  11. 430336
  12. 664225
  13. 412164
  14. 715716
  15. 582169
  16. 24373969
  17. 206116
  18. 82944
  19. 52171729
  20. 958441
  21. 72361
  22. 966289
  23. 439569
  24. 855625
  25. 322624
  26. 200704
  27. 60357361
  28. 91126116
  29. 40401
  30. 774400
  31. 30096196
  32. 46403344
  33. 326041
  34. 80089
  35. 337561
  36. 12292036
  37. 28561
  38. 102400
  39. 413449
  40. 320356

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