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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 935 · 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. 1.4897² =
  2. 2.5107² =
  3. 3.500² =
  4. 4.866² =
  5. 5.2456² =
  6. 6.761² =
  7. 7.244² =
  8. 8.866² =
  9. 9.906² =
  10. 10.1221² =
  11. 11.783² =
  12. 12.950² =
  13. 13.191² =
  14. 14.3489² =
  15. 15.6571² =
  16. 16.387² =
  17. 17.820² =
  18. 18.946² =
  19. 19.115² =
  20. 20.503² =
  21. 21.652² =
  22. 22.7558² =
  23. 23.928² =
  24. 24.220² =
  25. 25.243² =
  26. 26.302² =
  27. 27.580² =
  28. 28.9151² =
  29. 29.508² =
  30. 30.5858² =
  31. 31.7829² =
  32. 32.982² =
  33. 33.129² =
  34. 34.2607² =
  35. 35.786² =
  36. 36.530² =
  37. 37.4225² =
  38. 38.623² =
  39. 39.8122² =
  40. 40.601² =

Answer key

  1. 23980609
  2. 26081449
  3. 250000
  4. 749956
  5. 6031936
  6. 579121
  7. 59536
  8. 749956
  9. 820836
  10. 1490841
  11. 613089
  12. 902500
  13. 36481
  14. 12173121
  15. 43178041
  16. 149769
  17. 672400
  18. 894916
  19. 13225
  20. 253009
  21. 425104
  22. 57123364
  23. 861184
  24. 48400
  25. 59049
  26. 91204
  27. 336400
  28. 83740801
  29. 258064
  30. 34316164
  31. 61293241
  32. 964324
  33. 16641
  34. 6796449
  35. 617796
  36. 280900
  37. 17850625
  38. 388129
  39. 65966884
  40. 361201

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