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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 168 · 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. 1.186² =
  2. 2.207² =
  3. 3.8650² =
  4. 4.313² =
  5. 5.146² =
  6. 6.762² =
  7. 7.838² =
  8. 8.7110² =
  9. 9.4950² =
  10. 10.227² =
  11. 11.5025² =
  12. 12.3022² =
  13. 13.9878² =
  14. 14.636² =
  15. 15.730² =
  16. 16.898² =
  17. 17.786² =
  18. 18.986² =
  19. 19.838² =
  20. 20.424² =
  21. 21.607² =
  22. 22.177² =
  23. 23.304² =
  24. 24.8241² =
  25. 25.467² =
  26. 26.553² =
  27. 27.281² =
  28. 28.377² =
  29. 29.118² =
  30. 30.240² =
  31. 31.201² =
  32. 32.898² =
  33. 33.287² =
  34. 34.227² =
  35. 35.173² =
  36. 36.967² =
  37. 37.149² =
  38. 38.579² =
  39. 39.220² =
  40. 40.839² =

Answer key

  1. 34596
  2. 42849
  3. 74822500
  4. 97969
  5. 21316
  6. 580644
  7. 702244
  8. 50552100
  9. 24502500
  10. 51529
  11. 25250625
  12. 9132484
  13. 97574884
  14. 404496
  15. 532900
  16. 806404
  17. 617796
  18. 972196
  19. 702244
  20. 179776
  21. 368449
  22. 31329
  23. 92416
  24. 67914081
  25. 218089
  26. 305809
  27. 78961
  28. 142129
  29. 13924
  30. 57600
  31. 40401
  32. 806404
  33. 82369
  34. 51529
  35. 29929
  36. 935089
  37. 22201
  38. 335241
  39. 48400
  40. 703921

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