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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 145 · 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. 1.921² =
  2. 2.397² =
  3. 3.384² =
  4. 4.253² =
  5. 5.912² =
  6. 6.925² =
  7. 7.288² =
  8. 8.244² =
  9. 9.961² =
  10. 10.308² =
  11. 11.788² =
  12. 12.957² =
  13. 13.2969² =
  14. 14.553² =
  15. 15.3112² =
  16. 16.4439² =
  17. 17.412² =
  18. 18.526² =
  19. 19.332² =
  20. 20.375² =
  21. 21.455² =
  22. 22.4537² =
  23. 23.8083² =
  24. 24.363² =
  25. 25.513² =
  26. 26.749² =
  27. 27.979² =
  28. 28.4739² =
  29. 29.995² =
  30. 30.6632² =
  31. 31.277² =
  32. 32.486² =
  33. 33.855² =
  34. 34.201² =
  35. 35.995² =
  36. 36.918² =
  37. 37.458² =
  38. 38.918² =
  39. 39.249² =
  40. 40.264² =

Answer key

  1. 848241
  2. 157609
  3. 147456
  4. 64009
  5. 831744
  6. 855625
  7. 82944
  8. 59536
  9. 923521
  10. 94864
  11. 620944
  12. 915849
  13. 8814961
  14. 305809
  15. 9684544
  16. 19704721
  17. 169744
  18. 276676
  19. 110224
  20. 140625
  21. 207025
  22. 20584369
  23. 65334889
  24. 131769
  25. 263169
  26. 561001
  27. 958441
  28. 22458121
  29. 990025
  30. 43983424
  31. 76729
  32. 236196
  33. 731025
  34. 40401
  35. 990025
  36. 842724
  37. 209764
  38. 842724
  39. 62001
  40. 69696

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