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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 997 · 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. 1.327² =
  2. 2.2652² =
  3. 3.2950² =
  4. 4.691² =
  5. 5.598² =
  6. 6.333² =
  7. 7.729² =
  8. 8.271² =
  9. 9.265² =
  10. 10.399² =
  11. 11.972² =
  12. 12.819² =
  13. 13.635² =
  14. 14.4431² =
  15. 15.667² =
  16. 16.277² =
  17. 17.336² =
  18. 18.909² =
  19. 19.5888² =
  20. 20.591² =
  21. 21.165² =
  22. 22.240² =
  23. 23.3682² =
  24. 24.8553² =
  25. 25.769² =
  26. 26.6975² =
  27. 27.338² =
  28. 28.136² =
  29. 29.629² =
  30. 30.405² =
  31. 31.374² =
  32. 32.378² =
  33. 33.981² =
  34. 34.732² =
  35. 35.532² =
  36. 36.486² =
  37. 37.147² =
  38. 38.5057² =
  39. 39.672² =
  40. 40.122² =

Answer key

  1. 106929
  2. 7033104
  3. 8702500
  4. 477481
  5. 357604
  6. 110889
  7. 531441
  8. 73441
  9. 70225
  10. 159201
  11. 944784
  12. 670761
  13. 403225
  14. 19633761
  15. 444889
  16. 76729
  17. 112896
  18. 826281
  19. 34668544
  20. 349281
  21. 27225
  22. 57600
  23. 13557124
  24. 73153809
  25. 591361
  26. 48650625
  27. 114244
  28. 18496
  29. 395641
  30. 164025
  31. 139876
  32. 142884
  33. 962361
  34. 535824
  35. 283024
  36. 236196
  37. 21609
  38. 25573249
  39. 451584
  40. 14884

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