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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 722 · 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. 1.3443² =
  2. 2.668² =
  3. 3.2415² =
  4. 4.8048² =
  5. 5.2674² =
  6. 6.274² =
  7. 7.802² =
  8. 8.145² =
  9. 9.568² =
  10. 10.5579² =
  11. 11.164² =
  12. 12.200² =
  13. 13.450² =
  14. 14.854² =
  15. 15.7733² =
  16. 16.3430² =
  17. 17.853² =
  18. 18.2510² =
  19. 19.198² =
  20. 20.744² =
  21. 21.6682² =
  22. 22.582² =
  23. 23.137² =
  24. 24.866² =
  25. 25.3989² =
  26. 26.3958² =
  27. 27.332² =
  28. 28.625² =
  29. 29.373² =
  30. 30.281² =
  31. 31.255² =
  32. 32.151² =
  33. 33.9392² =
  34. 34.779² =
  35. 35.865² =
  36. 36.427² =
  37. 37.871² =
  38. 38.970² =
  39. 39.1273² =
  40. 40.362² =

Answer key

  1. 11854249
  2. 446224
  3. 5832225
  4. 64770304
  5. 7150276
  6. 75076
  7. 643204
  8. 21025
  9. 322624
  10. 31125241
  11. 26896
  12. 40000
  13. 202500
  14. 729316
  15. 59799289
  16. 11764900
  17. 727609
  18. 6300100
  19. 39204
  20. 553536
  21. 44649124
  22. 338724
  23. 18769
  24. 749956
  25. 15912121
  26. 15665764
  27. 110224
  28. 390625
  29. 139129
  30. 78961
  31. 65025
  32. 22801
  33. 88209664
  34. 606841
  35. 748225
  36. 182329
  37. 758641
  38. 940900
  39. 1620529
  40. 131044

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