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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 253 · 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. 1.586² =
  2. 2.431² =
  3. 3.747² =
  4. 4.7523² =
  5. 5.361² =
  6. 6.8980² =
  7. 7.300² =
  8. 8.450² =
  9. 9.3983² =
  10. 10.453² =
  11. 11.576² =
  12. 12.179² =
  13. 13.680² =
  14. 14.310² =
  15. 15.533² =
  16. 16.224² =
  17. 17.355² =
  18. 18.228² =
  19. 19.110² =
  20. 20.378² =
  21. 21.912² =
  22. 22.463² =
  23. 23.529² =
  24. 24.650² =
  25. 25.906² =
  26. 26.943² =
  27. 27.635² =
  28. 28.772² =
  29. 29.647² =
  30. 30.958² =
  31. 31.3095² =
  32. 32.634² =
  33. 33.233² =
  34. 34.899² =
  35. 35.320² =
  36. 36.453² =
  37. 37.776² =
  38. 38.748² =
  39. 39.3629² =
  40. 40.293² =

Answer key

  1. 343396
  2. 185761
  3. 558009
  4. 56595529
  5. 130321
  6. 80640400
  7. 90000
  8. 202500
  9. 15864289
  10. 205209
  11. 331776
  12. 32041
  13. 462400
  14. 96100
  15. 284089
  16. 50176
  17. 126025
  18. 51984
  19. 12100
  20. 142884
  21. 831744
  22. 214369
  23. 279841
  24. 422500
  25. 820836
  26. 889249
  27. 403225
  28. 595984
  29. 418609
  30. 917764
  31. 9579025
  32. 401956
  33. 54289
  34. 808201
  35. 102400
  36. 205209
  37. 602176
  38. 559504
  39. 13169641
  40. 85849

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