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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 171 · 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. 1.925² =
  2. 2.523² =
  3. 3.968² =
  4. 4.105² =
  5. 5.129² =
  6. 6.466² =
  7. 7.8171² =
  8. 8.225² =
  9. 9.169² =
  10. 10.8562² =
  11. 11.522² =
  12. 12.543² =
  13. 13.3012² =
  14. 14.776² =
  15. 15.989² =
  16. 16.5026² =
  17. 17.745² =
  18. 18.700² =
  19. 19.251² =
  20. 20.127² =
  21. 21.9236² =
  22. 22.759² =
  23. 23.711² =
  24. 24.293² =
  25. 25.292² =
  26. 26.894² =
  27. 27.630² =
  28. 28.574² =
  29. 29.953² =
  30. 30.512² =
  31. 31.393² =
  32. 32.489² =
  33. 33.5717² =
  34. 34.346² =
  35. 35.129² =
  36. 36.345² =
  37. 37.450² =
  38. 38.732² =
  39. 39.353² =
  40. 40.102² =

Answer key

  1. 855625
  2. 273529
  3. 937024
  4. 11025
  5. 16641
  6. 217156
  7. 66765241
  8. 50625
  9. 28561
  10. 73307844
  11. 272484
  12. 294849
  13. 9072144
  14. 602176
  15. 978121
  16. 25260676
  17. 555025
  18. 490000
  19. 63001
  20. 16129
  21. 85303696
  22. 576081
  23. 505521
  24. 85849
  25. 85264
  26. 799236
  27. 396900
  28. 329476
  29. 908209
  30. 262144
  31. 154449
  32. 239121
  33. 32684089
  34. 119716
  35. 16641
  36. 119025
  37. 202500
  38. 535824
  39. 124609
  40. 10404

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