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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 365 · 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. 1.391² =
  2. 2.706² =
  3. 3.912² =
  4. 4.2982² =
  5. 5.1030² =
  6. 6.235² =
  7. 7.618² =
  8. 8.422² =
  9. 9.957² =
  10. 10.118² =
  11. 11.512² =
  12. 12.9574² =
  13. 13.797² =
  14. 14.512² =
  15. 15.4440² =
  16. 16.190² =
  17. 17.729² =
  18. 18.294² =
  19. 19.365² =
  20. 20.532² =
  21. 21.5640² =
  22. 22.378² =
  23. 23.7634² =
  24. 24.919² =
  25. 25.818² =
  26. 26.3212² =
  27. 27.8589² =
  28. 28.971² =
  29. 29.285² =
  30. 30.576² =
  31. 31.6603² =
  32. 32.655² =
  33. 33.581² =
  34. 34.214² =
  35. 35.3473² =
  36. 36.406² =
  37. 37.3935² =
  38. 38.964² =
  39. 39.195² =
  40. 40.839² =

Answer key

  1. 152881
  2. 498436
  3. 831744
  4. 8892324
  5. 1060900
  6. 55225
  7. 381924
  8. 178084
  9. 915849
  10. 13924
  11. 262144
  12. 91661476
  13. 635209
  14. 262144
  15. 19713600
  16. 36100
  17. 531441
  18. 86436
  19. 133225
  20. 283024
  21. 31809600
  22. 142884
  23. 58277956
  24. 844561
  25. 669124
  26. 10316944
  27. 73770921
  28. 942841
  29. 81225
  30. 331776
  31. 43599609
  32. 429025
  33. 337561
  34. 45796
  35. 12061729
  36. 164836
  37. 15484225
  38. 929296
  39. 38025
  40. 703921

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