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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 806 · 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. 1.233² =
  2. 2.733² =
  3. 3.807² =
  4. 4.123² =
  5. 5.266² =
  6. 6.287² =
  7. 7.6946² =
  8. 8.9952² =
  9. 9.194² =
  10. 10.289² =
  11. 11.795² =
  12. 12.401² =
  13. 13.396² =
  14. 14.136² =
  15. 15.706² =
  16. 16.3600² =
  17. 17.623² =
  18. 18.9879² =
  19. 19.594² =
  20. 20.546² =
  21. 21.7946² =
  22. 22.138² =
  23. 23.951² =
  24. 24.1356² =
  25. 25.4374² =
  26. 26.647² =
  27. 27.378² =
  28. 28.2039² =
  29. 29.431² =
  30. 30.168² =
  31. 31.6479² =
  32. 32.451² =
  33. 33.406² =
  34. 34.241² =
  35. 35.716² =
  36. 36.683² =
  37. 37.995² =
  38. 38.673² =
  39. 39.136² =
  40. 40.2887² =

Answer key

  1. 54289
  2. 537289
  3. 651249
  4. 15129
  5. 70756
  6. 82369
  7. 48246916
  8. 99042304
  9. 37636
  10. 83521
  11. 632025
  12. 160801
  13. 156816
  14. 18496
  15. 498436
  16. 12960000
  17. 388129
  18. 97594641
  19. 352836
  20. 298116
  21. 63138916
  22. 19044
  23. 904401
  24. 1838736
  25. 19131876
  26. 418609
  27. 142884
  28. 4157521
  29. 185761
  30. 28224
  31. 41977441
  32. 203401
  33. 164836
  34. 58081
  35. 512656
  36. 466489
  37. 990025
  38. 452929
  39. 18496
  40. 8334769

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