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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 696 · 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. 1.439² =
  2. 2.6297² =
  3. 3.5940² =
  4. 4.817² =
  5. 5.730² =
  6. 6.866² =
  7. 7.731² =
  8. 8.4144² =
  9. 9.4252² =
  10. 10.881² =
  11. 11.340² =
  12. 12.301² =
  13. 13.129² =
  14. 14.319² =
  15. 15.934² =
  16. 16.2767² =
  17. 17.880² =
  18. 18.695² =
  19. 19.845² =
  20. 20.436² =
  21. 21.704² =
  22. 22.127² =
  23. 23.631² =
  24. 24.113² =
  25. 25.240² =
  26. 26.9891² =
  27. 27.146² =
  28. 28.482² =
  29. 29.799² =
  30. 30.207² =
  31. 31.292² =
  32. 32.873² =
  33. 33.988² =
  34. 34.4567² =
  35. 35.2391² =
  36. 36.1970² =
  37. 37.546² =
  38. 38.123² =
  39. 39.8826² =
  40. 40.360² =

Answer key

  1. 192721
  2. 39652209
  3. 35283600
  4. 667489
  5. 532900
  6. 749956
  7. 534361
  8. 17172736
  9. 18079504
  10. 776161
  11. 115600
  12. 90601
  13. 16641
  14. 101761
  15. 872356
  16. 7656289
  17. 774400
  18. 483025
  19. 714025
  20. 190096
  21. 495616
  22. 16129
  23. 398161
  24. 12769
  25. 57600
  26. 97831881
  27. 21316
  28. 232324
  29. 638401
  30. 42849
  31. 85264
  32. 762129
  33. 976144
  34. 20857489
  35. 5716881
  36. 3880900
  37. 298116
  38. 15129
  39. 77898276
  40. 129600

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