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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 941 · 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. 1.722² =
  2. 2.714² =
  3. 3.545² =
  4. 4.818² =
  5. 5.244² =
  6. 6.688² =
  7. 7.2554² =
  8. 8.110² =
  9. 9.198² =
  10. 10.659² =
  11. 11.447² =
  12. 12.472² =
  13. 13.624² =
  14. 14.716² =
  15. 15.7141² =
  16. 16.533² =
  17. 17.187² =
  18. 18.884² =
  19. 19.759² =
  20. 20.353² =
  21. 21.852² =
  22. 22.417² =
  23. 23.5518² =
  24. 24.261² =
  25. 25.223² =
  26. 26.705² =
  27. 27.323² =
  28. 28.7310² =
  29. 29.7822² =
  30. 30.874² =
  31. 31.5016² =
  32. 32.8165² =
  33. 33.3587² =
  34. 34.798² =
  35. 35.744² =
  36. 36.7558² =
  37. 37.492² =
  38. 38.402² =
  39. 39.135² =
  40. 40.515² =

Answer key

  1. 521284
  2. 509796
  3. 297025
  4. 669124
  5. 59536
  6. 473344
  7. 6522916
  8. 12100
  9. 39204
  10. 434281
  11. 199809
  12. 222784
  13. 389376
  14. 512656
  15. 50993881
  16. 284089
  17. 34969
  18. 781456
  19. 576081
  20. 124609
  21. 725904
  22. 173889
  23. 30448324
  24. 68121
  25. 49729
  26. 497025
  27. 104329
  28. 53436100
  29. 61183684
  30. 763876
  31. 25160256
  32. 66667225
  33. 12866569
  34. 636804
  35. 553536
  36. 57123364
  37. 242064
  38. 161604
  39. 18225
  40. 265225

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