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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 16 · 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. 1.704² =
  2. 2.655² =
  3. 3.359² =
  4. 4.144² =
  5. 5.909² =
  6. 6.342² =
  7. 7.257² =
  8. 8.825² =
  9. 9.834² =
  10. 10.136² =
  11. 11.6662² =
  12. 12.1878² =
  13. 13.511² =
  14. 14.6812² =
  15. 15.123² =
  16. 16.3570² =
  17. 17.164² =
  18. 18.280² =
  19. 19.4830² =
  20. 20.289² =
  21. 21.832² =
  22. 22.288² =
  23. 23.1643² =
  24. 24.478² =
  25. 25.9993² =
  26. 26.6555² =
  27. 27.576² =
  28. 28.5531² =
  29. 29.7643² =
  30. 30.353² =
  31. 31.850² =
  32. 32.742² =
  33. 33.392² =
  34. 34.2908² =
  35. 35.2077² =
  36. 36.237² =
  37. 37.654² =
  38. 38.357² =
  39. 39.451² =
  40. 40.5720² =

Answer key

  1. 495616
  2. 429025
  3. 128881
  4. 20736
  5. 826281
  6. 116964
  7. 66049
  8. 680625
  9. 695556
  10. 18496
  11. 44382244
  12. 3526884
  13. 261121
  14. 46403344
  15. 15129
  16. 12744900
  17. 26896
  18. 78400
  19. 23328900
  20. 83521
  21. 692224
  22. 82944
  23. 2699449
  24. 228484
  25. 99860049
  26. 42968025
  27. 331776
  28. 30591961
  29. 58415449
  30. 124609
  31. 722500
  32. 550564
  33. 153664
  34. 8456464
  35. 4313929
  36. 56169
  37. 427716
  38. 127449
  39. 203401
  40. 32718400

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