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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 882 · 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. 1.202² =
  2. 2.762² =
  3. 3.472² =
  4. 4.1735² =
  5. 5.245² =
  6. 6.915² =
  7. 7.803² =
  8. 8.971² =
  9. 9.980² =
  10. 10.2612² =
  11. 11.8743² =
  12. 12.343² =
  13. 13.202² =
  14. 14.159² =
  15. 15.759² =
  16. 16.310² =
  17. 17.718² =
  18. 18.387² =
  19. 19.2743² =
  20. 20.6170² =
  21. 21.795² =
  22. 22.2555² =
  23. 23.6660² =
  24. 24.242² =
  25. 25.533² =
  26. 26.731² =
  27. 27.441² =
  28. 28.1181² =
  29. 29.475² =
  30. 30.8852² =
  31. 31.658² =
  32. 32.497² =
  33. 33.399² =
  34. 34.338² =
  35. 35.558² =
  36. 36.775² =
  37. 37.7687² =
  38. 38.976² =
  39. 39.152² =
  40. 40.718² =

Answer key

  1. 40804
  2. 580644
  3. 222784
  4. 3010225
  5. 60025
  6. 837225
  7. 644809
  8. 942841
  9. 960400
  10. 6822544
  11. 76440049
  12. 117649
  13. 40804
  14. 25281
  15. 576081
  16. 96100
  17. 515524
  18. 149769
  19. 7524049
  20. 38068900
  21. 632025
  22. 6528025
  23. 44355600
  24. 58564
  25. 284089
  26. 534361
  27. 194481
  28. 1394761
  29. 225625
  30. 78357904
  31. 432964
  32. 247009
  33. 159201
  34. 114244
  35. 311364
  36. 600625
  37. 59089969
  38. 952576
  39. 23104
  40. 515524

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