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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 725 · 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. 1.128² =
  2. 2.747² =
  3. 3.752² =
  4. 4.879² =
  5. 5.564² =
  6. 6.489² =
  7. 7.164² =
  8. 8.573² =
  9. 9.941² =
  10. 10.5844² =
  11. 11.6701² =
  12. 12.2010² =
  13. 13.959² =
  14. 14.843² =
  15. 15.352² =
  16. 16.808² =
  17. 17.397² =
  18. 18.492² =
  19. 19.187² =
  20. 20.631² =
  21. 21.663² =
  22. 22.4821² =
  23. 23.329² =
  24. 24.412² =
  25. 25.2558² =
  26. 26.104² =
  27. 27.730² =
  28. 28.9934² =
  29. 29.2694² =
  30. 30.132² =
  31. 31.144² =
  32. 32.643² =
  33. 33.289² =
  34. 34.694² =
  35. 35.155² =
  36. 36.618² =
  37. 37.3403² =
  38. 38.355² =
  39. 39.2072² =
  40. 40.459² =

Answer key

  1. 16384
  2. 558009
  3. 565504
  4. 772641
  5. 318096
  6. 239121
  7. 26896
  8. 328329
  9. 885481
  10. 34152336
  11. 44903401
  12. 4040100
  13. 919681
  14. 710649
  15. 123904
  16. 652864
  17. 157609
  18. 242064
  19. 34969
  20. 398161
  21. 439569
  22. 23242041
  23. 108241
  24. 169744
  25. 6543364
  26. 10816
  27. 532900
  28. 98684356
  29. 7257636
  30. 17424
  31. 20736
  32. 413449
  33. 83521
  34. 481636
  35. 24025
  36. 381924
  37. 11580409
  38. 126025
  39. 4293184
  40. 210681

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