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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 149 · 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. 1.4051² =
  2. 2.543² =
  3. 3.766² =
  4. 4.8839² =
  5. 5.671² =
  6. 6.225² =
  7. 7.622² =
  8. 8.132² =
  9. 9.844² =
  10. 10.542² =
  11. 11.263² =
  12. 12.138² =
  13. 13.283² =
  14. 14.116² =
  15. 15.355² =
  16. 16.636² =
  17. 17.1016² =
  18. 18.489² =
  19. 19.383² =
  20. 20.772² =
  21. 21.179² =
  22. 22.817² =
  23. 23.263² =
  24. 24.298² =
  25. 25.248² =
  26. 26.488² =
  27. 27.8858² =
  28. 28.570² =
  29. 29.348² =
  30. 30.342² =
  31. 31.436² =
  32. 32.697² =
  33. 33.2720² =
  34. 34.8663² =
  35. 35.2084² =
  36. 36.2918² =
  37. 37.234² =
  38. 38.230² =
  39. 39.670² =
  40. 40.575² =

Answer key

  1. 16410601
  2. 294849
  3. 586756
  4. 78127921
  5. 450241
  6. 50625
  7. 386884
  8. 17424
  9. 712336
  10. 293764
  11. 69169
  12. 19044
  13. 80089
  14. 13456
  15. 126025
  16. 404496
  17. 1032256
  18. 239121
  19. 146689
  20. 595984
  21. 32041
  22. 667489
  23. 69169
  24. 88804
  25. 61504
  26. 238144
  27. 78464164
  28. 324900
  29. 121104
  30. 116964
  31. 190096
  32. 485809
  33. 7398400
  34. 75047569
  35. 4343056
  36. 8514724
  37. 54756
  38. 52900
  39. 448900
  40. 330625

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