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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 540 · 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. 1.506² =
  2. 2.267² =
  3. 3.973² =
  4. 4.3222² =
  5. 5.175² =
  6. 6.235² =
  7. 7.262² =
  8. 8.121² =
  9. 9.942² =
  10. 10.814² =
  11. 11.461² =
  12. 12.200² =
  13. 13.5117² =
  14. 14.612² =
  15. 15.2558² =
  16. 16.144² =
  17. 17.6928² =
  18. 18.8255² =
  19. 19.349² =
  20. 20.1568² =
  21. 21.1415² =
  22. 22.950² =
  23. 23.170² =
  24. 24.4478² =
  25. 25.521² =
  26. 26.406² =
  27. 27.773² =
  28. 28.835² =
  29. 29.146² =
  30. 30.137² =
  31. 31.320² =
  32. 32.220² =
  33. 33.401² =
  34. 34.9291² =
  35. 35.3865² =
  36. 36.900² =
  37. 37.6474² =
  38. 38.3324² =
  39. 39.2497² =
  40. 40.327² =

Answer key

  1. 256036
  2. 71289
  3. 946729
  4. 10381284
  5. 30625
  6. 55225
  7. 68644
  8. 14641
  9. 887364
  10. 662596
  11. 212521
  12. 40000
  13. 26183689
  14. 374544
  15. 6543364
  16. 20736
  17. 47997184
  18. 68145025
  19. 121801
  20. 2458624
  21. 2002225
  22. 902500
  23. 28900
  24. 20052484
  25. 271441
  26. 164836
  27. 597529
  28. 697225
  29. 21316
  30. 18769
  31. 102400
  32. 48400
  33. 160801
  34. 86322681
  35. 14938225
  36. 810000
  37. 41912676
  38. 11048976
  39. 6235009
  40. 106929

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