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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 213 · 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. 1.219² =
  2. 2.312² =
  3. 3.563² =
  4. 4.7299² =
  5. 5.923² =
  6. 6.680² =
  7. 7.2809² =
  8. 8.628² =
  9. 9.813² =
  10. 10.157² =
  11. 11.476² =
  12. 12.511² =
  13. 13.952² =
  14. 14.442² =
  15. 15.9347² =
  16. 16.4009² =
  17. 17.6815² =
  18. 18.531² =
  19. 19.911² =
  20. 20.7292² =
  21. 21.2028² =
  22. 22.694² =
  23. 23.882² =
  24. 24.1307² =
  25. 25.816² =
  26. 26.4590² =
  27. 27.144² =
  28. 28.217² =
  29. 29.670² =
  30. 30.6389² =
  31. 31.939² =
  32. 32.2507² =
  33. 33.213² =
  34. 34.8817² =
  35. 35.2729² =
  36. 36.9016² =
  37. 37.423² =
  38. 38.1575² =
  39. 39.798² =
  40. 40.318² =

Answer key

  1. 47961
  2. 97344
  3. 316969
  4. 53275401
  5. 851929
  6. 462400
  7. 7890481
  8. 394384
  9. 660969
  10. 24649
  11. 226576
  12. 261121
  13. 906304
  14. 195364
  15. 87366409
  16. 16072081
  17. 46444225
  18. 281961
  19. 829921
  20. 53173264
  21. 4112784
  22. 481636
  23. 777924
  24. 1708249
  25. 665856
  26. 21068100
  27. 20736
  28. 47089
  29. 448900
  30. 40819321
  31. 881721
  32. 6285049
  33. 45369
  34. 77739489
  35. 7447441
  36. 81288256
  37. 178929
  38. 2480625
  39. 636804
  40. 101124

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