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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 828 · 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. 1.594² =
  2. 2.951² =
  3. 3.993² =
  4. 4.411² =
  5. 5.925² =
  6. 6.954² =
  7. 7.148² =
  8. 8.219² =
  9. 9.6412² =
  10. 10.943² =
  11. 11.757² =
  12. 12.287² =
  13. 13.1841² =
  14. 14.189² =
  15. 15.646² =
  16. 16.286² =
  17. 17.239² =
  18. 18.1012² =
  19. 19.6923² =
  20. 20.3304² =
  21. 21.252² =
  22. 22.7254² =
  23. 23.4209² =
  24. 24.9924² =
  25. 25.3513² =
  26. 26.3510² =
  27. 27.819² =
  28. 28.7645² =
  29. 29.626² =
  30. 30.749² =
  31. 31.673² =
  32. 32.772² =
  33. 33.115² =
  34. 34.5148² =
  35. 35.795² =
  36. 36.4893² =
  37. 37.346² =
  38. 38.802² =
  39. 39.9979² =
  40. 40.480² =

Answer key

  1. 352836
  2. 904401
  3. 986049
  4. 168921
  5. 855625
  6. 910116
  7. 21904
  8. 47961
  9. 41113744
  10. 889249
  11. 573049
  12. 82369
  13. 3389281
  14. 35721
  15. 417316
  16. 81796
  17. 57121
  18. 1024144
  19. 47927929
  20. 10916416
  21. 63504
  22. 52620516
  23. 17715681
  24. 98485776
  25. 12341169
  26. 12320100
  27. 670761
  28. 58446025
  29. 391876
  30. 561001
  31. 452929
  32. 595984
  33. 13225
  34. 26501904
  35. 632025
  36. 23941449
  37. 119716
  38. 643204
  39. 99580441
  40. 230400

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