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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 751 · 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. 1.719² =
  2. 2.5789² =
  3. 3.591² =
  4. 4.180² =
  5. 5.469² =
  6. 6.6698² =
  7. 7.105² =
  8. 8.371² =
  9. 9.200² =
  10. 10.2804² =
  11. 11.335² =
  12. 12.9256² =
  13. 13.9687² =
  14. 14.541² =
  15. 15.949² =
  16. 16.817² =
  17. 17.185² =
  18. 18.1078² =
  19. 19.177² =
  20. 20.329² =
  21. 21.2948² =
  22. 22.3098² =
  23. 23.1506² =
  24. 24.4319² =
  25. 25.8716² =
  26. 26.390² =
  27. 27.538² =
  28. 28.169² =
  29. 29.721² =
  30. 30.151² =
  31. 31.777² =
  32. 32.1493² =
  33. 33.547² =
  34. 34.7238² =
  35. 35.666² =
  36. 36.979² =
  37. 37.133² =
  38. 38.813² =
  39. 39.2780² =
  40. 40.486² =

Answer key

  1. 516961
  2. 33512521
  3. 349281
  4. 32400
  5. 219961
  6. 44863204
  7. 11025
  8. 137641
  9. 40000
  10. 7862416
  11. 112225
  12. 85673536
  13. 93837969
  14. 292681
  15. 900601
  16. 667489
  17. 34225
  18. 1162084
  19. 31329
  20. 108241
  21. 8690704
  22. 9597604
  23. 2268036
  24. 18653761
  25. 75968656
  26. 152100
  27. 289444
  28. 28561
  29. 519841
  30. 22801
  31. 603729
  32. 2229049
  33. 299209
  34. 52388644
  35. 443556
  36. 958441
  37. 17689
  38. 660969
  39. 7728400
  40. 236196

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