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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 759 · 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. 1.308² =
  2. 2.3549² =
  3. 3.610² =
  4. 4.8918² =
  5. 5.1587² =
  6. 6.810² =
  7. 7.458² =
  8. 8.222² =
  9. 9.636² =
  10. 10.4293² =
  11. 11.397² =
  12. 12.5150² =
  13. 13.2523² =
  14. 14.4782² =
  15. 15.716² =
  16. 16.620² =
  17. 17.187² =
  18. 18.149² =
  19. 19.512² =
  20. 20.472² =
  21. 21.825² =
  22. 22.848² =
  23. 23.1491² =
  24. 24.311² =
  25. 25.489² =
  26. 26.438² =
  27. 27.7000² =
  28. 28.903² =
  29. 29.185² =
  30. 30.189² =
  31. 31.608² =
  32. 32.7004² =
  33. 33.951² =
  34. 34.502² =
  35. 35.9054² =
  36. 36.728² =
  37. 37.8977² =
  38. 38.724² =
  39. 39.895² =
  40. 40.927² =

Answer key

  1. 94864
  2. 12595401
  3. 372100
  4. 79530724
  5. 2518569
  6. 656100
  7. 209764
  8. 49284
  9. 404496
  10. 18429849
  11. 157609
  12. 26522500
  13. 6365529
  14. 22867524
  15. 512656
  16. 384400
  17. 34969
  18. 22201
  19. 262144
  20. 222784
  21. 680625
  22. 719104
  23. 2223081
  24. 96721
  25. 239121
  26. 191844
  27. 49000000
  28. 815409
  29. 34225
  30. 35721
  31. 369664
  32. 49056016
  33. 904401
  34. 252004
  35. 81974916
  36. 529984
  37. 80586529
  38. 524176
  39. 801025
  40. 859329

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