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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 281 · 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. 1.7161² =
  2. 2.422² =
  3. 3.623² =
  4. 4.4090² =
  5. 5.715² =
  6. 6.6985² =
  7. 7.302² =
  8. 8.7655² =
  9. 9.379² =
  10. 10.138² =
  11. 11.7286² =
  12. 12.4118² =
  13. 13.242² =
  14. 14.9856² =
  15. 15.229² =
  16. 16.3050² =
  17. 17.759² =
  18. 18.713² =
  19. 19.798² =
  20. 20.116² =
  21. 21.2201² =
  22. 22.627² =
  23. 23.528² =
  24. 24.250² =
  25. 25.359² =
  26. 26.920² =
  27. 27.455² =
  28. 28.5873² =
  29. 29.579² =
  30. 30.766² =
  31. 31.1697² =
  32. 32.186² =
  33. 33.5920² =
  34. 34.705² =
  35. 35.2005² =
  36. 36.747² =
  37. 37.487² =
  38. 38.917² =
  39. 39.408² =
  40. 40.3687² =

Answer key

  1. 51279921
  2. 178084
  3. 388129
  4. 16728100
  5. 511225
  6. 48790225
  7. 91204
  8. 58599025
  9. 143641
  10. 19044
  11. 53085796
  12. 16957924
  13. 58564
  14. 97140736
  15. 52441
  16. 9302500
  17. 576081
  18. 508369
  19. 636804
  20. 13456
  21. 4844401
  22. 393129
  23. 278784
  24. 62500
  25. 128881
  26. 846400
  27. 207025
  28. 34492129
  29. 335241
  30. 586756
  31. 2879809
  32. 34596
  33. 35046400
  34. 497025
  35. 4020025
  36. 558009
  37. 237169
  38. 840889
  39. 166464
  40. 13593969

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