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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 606 · 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. 1.495² =
  2. 2.739² =
  3. 3.151² =
  4. 4.2881² =
  5. 5.4235² =
  6. 6.786² =
  7. 7.314² =
  8. 8.311² =
  9. 9.5531² =
  10. 10.1721² =
  11. 11.2114² =
  12. 12.272² =
  13. 13.155² =
  14. 14.118² =
  15. 15.9787² =
  16. 16.662² =
  17. 17.114² =
  18. 18.783² =
  19. 19.5884² =
  20. 20.720² =
  21. 21.815² =
  22. 22.1658² =
  23. 23.139² =
  24. 24.459² =
  25. 25.452² =
  26. 26.1630² =
  27. 27.786² =
  28. 28.569² =
  29. 29.2240² =
  30. 30.1296² =
  31. 31.576² =
  32. 32.3861² =
  33. 33.286² =
  34. 34.8812² =
  35. 35.569² =
  36. 36.400² =
  37. 37.626² =
  38. 38.126² =
  39. 39.395² =
  40. 40.8195² =

Answer key

  1. 245025
  2. 546121
  3. 22801
  4. 8300161
  5. 17935225
  6. 617796
  7. 98596
  8. 96721
  9. 30591961
  10. 2961841
  11. 4468996
  12. 73984
  13. 24025
  14. 13924
  15. 95785369
  16. 438244
  17. 12996
  18. 613089
  19. 34621456
  20. 518400
  21. 664225
  22. 2748964
  23. 19321
  24. 210681
  25. 204304
  26. 2656900
  27. 617796
  28. 323761
  29. 5017600
  30. 1679616
  31. 331776
  32. 14907321
  33. 81796
  34. 77651344
  35. 323761
  36. 160000
  37. 391876
  38. 15876
  39. 156025
  40. 67158025

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