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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 872 · 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. 1.5694² =
  2. 2.551² =
  3. 3.7487² =
  4. 4.685² =
  5. 5.880² =
  6. 6.4250² =
  7. 7.475² =
  8. 8.109² =
  9. 9.327² =
  10. 10.4123² =
  11. 11.2263² =
  12. 12.6614² =
  13. 13.3432² =
  14. 14.1669² =
  15. 15.419² =
  16. 16.284² =
  17. 17.1769² =
  18. 18.249² =
  19. 19.5448² =
  20. 20.532² =
  21. 21.671² =
  22. 22.655² =
  23. 23.250² =
  24. 24.1732² =
  25. 25.971² =
  26. 26.786² =
  27. 27.7671² =
  28. 28.3317² =
  29. 29.664² =
  30. 30.194² =
  31. 31.623² =
  32. 32.131² =
  33. 33.9440² =
  34. 34.199² =
  35. 35.809² =
  36. 36.8531² =
  37. 37.916² =
  38. 38.867² =
  39. 39.2061² =
  40. 40.3966² =

Answer key

  1. 32421636
  2. 303601
  3. 56055169
  4. 469225
  5. 774400
  6. 18062500
  7. 225625
  8. 11881
  9. 106929
  10. 16999129
  11. 5121169
  12. 43744996
  13. 11778624
  14. 2785561
  15. 175561
  16. 80656
  17. 3129361
  18. 62001
  19. 29680704
  20. 283024
  21. 450241
  22. 429025
  23. 62500
  24. 2999824
  25. 942841
  26. 617796
  27. 58844241
  28. 11002489
  29. 440896
  30. 37636
  31. 388129
  32. 17161
  33. 89113600
  34. 39601
  35. 654481
  36. 72777961
  37. 839056
  38. 751689
  39. 4247721
  40. 15729156

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