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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 204 · 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. 1.2671² =
  2. 2.738² =
  3. 3.351² =
  4. 4.725² =
  5. 5.701² =
  6. 6.873² =
  7. 7.910² =
  8. 8.235² =
  9. 9.698² =
  10. 10.2956² =
  11. 11.130² =
  12. 12.380² =
  13. 13.3775² =
  14. 14.292² =
  15. 15.7095² =
  16. 16.885² =
  17. 17.591² =
  18. 18.471² =
  19. 19.482² =
  20. 20.5984² =
  21. 21.5181² =
  22. 22.425² =
  23. 23.7000² =
  24. 24.476² =
  25. 25.203² =
  26. 26.647² =
  27. 27.113² =
  28. 28.901² =
  29. 29.447² =
  30. 30.546² =
  31. 31.380² =
  32. 32.537² =
  33. 33.4416² =
  34. 34.2310² =
  35. 35.255² =
  36. 36.737² =
  37. 37.468² =
  38. 38.286² =
  39. 39.401² =
  40. 40.185² =

Answer key

  1. 7134241
  2. 544644
  3. 123201
  4. 525625
  5. 491401
  6. 762129
  7. 828100
  8. 55225
  9. 487204
  10. 8737936
  11. 16900
  12. 144400
  13. 14250625
  14. 85264
  15. 50339025
  16. 783225
  17. 349281
  18. 221841
  19. 232324
  20. 35808256
  21. 26842761
  22. 180625
  23. 49000000
  24. 226576
  25. 41209
  26. 418609
  27. 12769
  28. 811801
  29. 199809
  30. 298116
  31. 144400
  32. 288369
  33. 19501056
  34. 5336100
  35. 65025
  36. 543169
  37. 219024
  38. 81796
  39. 160801
  40. 34225

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