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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 319 · 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. 1.904² =
  2. 2.394² =
  3. 3.933² =
  4. 4.4911² =
  5. 5.5444² =
  6. 6.902² =
  7. 7.324² =
  8. 8.430² =
  9. 9.736² =
  10. 10.649² =
  11. 11.590² =
  12. 12.465² =
  13. 13.535² =
  14. 14.4583² =
  15. 15.631² =
  16. 16.964² =
  17. 17.164² =
  18. 18.933² =
  19. 19.9424² =
  20. 20.5971² =
  21. 21.913² =
  22. 22.931² =
  23. 23.878² =
  24. 24.8889² =
  25. 25.406² =
  26. 26.568² =
  27. 27.1289² =
  28. 28.268² =
  29. 29.205² =
  30. 30.210² =
  31. 31.1438² =
  32. 32.3496² =
  33. 33.3549² =
  34. 34.5609² =
  35. 35.174² =
  36. 36.6582² =
  37. 37.389² =
  38. 38.135² =
  39. 39.793² =
  40. 40.313² =

Answer key

  1. 817216
  2. 155236
  3. 870489
  4. 24117921
  5. 29637136
  6. 813604
  7. 104976
  8. 184900
  9. 541696
  10. 421201
  11. 348100
  12. 216225
  13. 286225
  14. 21003889
  15. 398161
  16. 929296
  17. 26896
  18. 870489
  19. 88811776
  20. 35652841
  21. 833569
  22. 866761
  23. 770884
  24. 79014321
  25. 164836
  26. 322624
  27. 1661521
  28. 71824
  29. 42025
  30. 44100
  31. 2067844
  32. 12222016
  33. 12595401
  34. 31460881
  35. 30276
  36. 43322724
  37. 151321
  38. 18225
  39. 628849
  40. 97969

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