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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 586 · 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. 1.236² =
  2. 2.820² =
  3. 3.835² =
  4. 4.5640² =
  5. 5.821² =
  6. 6.7958² =
  7. 7.975² =
  8. 8.541² =
  9. 9.132² =
  10. 10.246² =
  11. 11.995² =
  12. 12.984² =
  13. 13.565² =
  14. 14.1500² =
  15. 15.145² =
  16. 16.599² =
  17. 17.336² =
  18. 18.890² =
  19. 19.795² =
  20. 20.5878² =
  21. 21.224² =
  22. 22.983² =
  23. 23.984² =
  24. 24.365² =
  25. 25.773² =
  26. 26.4700² =
  27. 27.103² =
  28. 28.5376² =
  29. 29.468² =
  30. 30.544² =
  31. 31.415² =
  32. 32.3913² =
  33. 33.865² =
  34. 34.9427² =
  35. 35.614² =
  36. 36.405² =
  37. 37.576² =
  38. 38.753² =
  39. 39.5925² =
  40. 40.162² =

Answer key

  1. 55696
  2. 672400
  3. 697225
  4. 31809600
  5. 674041
  6. 63329764
  7. 950625
  8. 292681
  9. 17424
  10. 60516
  11. 990025
  12. 968256
  13. 319225
  14. 2250000
  15. 21025
  16. 358801
  17. 112896
  18. 792100
  19. 632025
  20. 34550884
  21. 50176
  22. 966289
  23. 968256
  24. 133225
  25. 597529
  26. 22090000
  27. 10609
  28. 28901376
  29. 219024
  30. 295936
  31. 172225
  32. 15311569
  33. 748225
  34. 88868329
  35. 376996
  36. 164025
  37. 331776
  38. 567009
  39. 35105625
  40. 26244

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