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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 796 · 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. 1.533² =
  2. 2.784² =
  3. 3.231² =
  4. 4.677² =
  5. 5.346² =
  6. 6.808² =
  7. 7.653² =
  8. 8.225² =
  9. 9.869² =
  10. 10.731² =
  11. 11.1191² =
  12. 12.3708² =
  13. 13.649² =
  14. 14.769² =
  15. 15.605² =
  16. 16.8329² =
  17. 17.588² =
  18. 18.787² =
  19. 19.533² =
  20. 20.4229² =
  21. 21.802² =
  22. 22.7853² =
  23. 23.353² =
  24. 24.3634² =
  25. 25.400² =
  26. 26.414² =
  27. 27.4574² =
  28. 28.236² =
  29. 29.9979² =
  30. 30.351² =
  31. 31.2936² =
  32. 32.8297² =
  33. 33.5492² =
  34. 34.8550² =
  35. 35.536² =
  36. 36.455² =
  37. 37.5883² =
  38. 38.790² =
  39. 39.168² =
  40. 40.576² =

Answer key

  1. 284089
  2. 614656
  3. 53361
  4. 458329
  5. 119716
  6. 652864
  7. 426409
  8. 50625
  9. 755161
  10. 534361
  11. 1418481
  12. 13749264
  13. 421201
  14. 591361
  15. 366025
  16. 69372241
  17. 345744
  18. 619369
  19. 284089
  20. 17884441
  21. 643204
  22. 61669609
  23. 124609
  24. 13205956
  25. 160000
  26. 171396
  27. 20921476
  28. 55696
  29. 99580441
  30. 123201
  31. 8620096
  32. 68840209
  33. 30162064
  34. 73102500
  35. 287296
  36. 207025
  37. 34609689
  38. 624100
  39. 28224
  40. 331776

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