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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 244 · 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. 1.194² =
  2. 2.369² =
  3. 3.730² =
  4. 4.536² =
  5. 5.7559² =
  6. 6.857² =
  7. 7.197² =
  8. 8.418² =
  9. 9.423² =
  10. 10.8292² =
  11. 11.167² =
  12. 12.593² =
  13. 13.781² =
  14. 14.6439² =
  15. 15.979² =
  16. 16.2790² =
  17. 17.6199² =
  18. 18.433² =
  19. 19.675² =
  20. 20.699² =
  21. 21.976² =
  22. 22.657² =
  23. 23.464² =
  24. 24.111² =
  25. 25.780² =
  26. 26.554² =
  27. 27.155² =
  28. 28.553² =
  29. 29.518² =
  30. 30.809² =
  31. 31.8733² =
  32. 32.732² =
  33. 33.1956² =
  34. 34.186² =
  35. 35.176² =
  36. 36.530² =
  37. 37.269² =
  38. 38.8524² =
  39. 39.3389² =
  40. 40.6140² =

Answer key

  1. 37636
  2. 136161
  3. 532900
  4. 287296
  5. 57138481
  6. 734449
  7. 38809
  8. 174724
  9. 178929
  10. 68757264
  11. 27889
  12. 351649
  13. 609961
  14. 41460721
  15. 958441
  16. 7784100
  17. 38427601
  18. 187489
  19. 455625
  20. 488601
  21. 952576
  22. 431649
  23. 215296
  24. 12321
  25. 608400
  26. 306916
  27. 24025
  28. 305809
  29. 268324
  30. 654481
  31. 76265289
  32. 535824
  33. 3825936
  34. 34596
  35. 30976
  36. 280900
  37. 72361
  38. 72658576
  39. 11485321
  40. 37699600

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