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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 212 · 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. 1.3943² =
  2. 2.473² =
  3. 3.203² =
  4. 4.1800² =
  5. 5.6053² =
  6. 6.486² =
  7. 7.5232² =
  8. 8.905² =
  9. 9.1250² =
  10. 10.8207² =
  11. 11.458² =
  12. 12.455² =
  13. 13.601² =
  14. 14.9969² =
  15. 15.748² =
  16. 16.211² =
  17. 17.257² =
  18. 18.274² =
  19. 19.457² =
  20. 20.228² =
  21. 21.432² =
  22. 22.806² =
  23. 23.530² =
  24. 24.1206² =
  25. 25.580² =
  26. 26.1743² =
  27. 27.227² =
  28. 28.6008² =
  29. 29.173² =
  30. 30.157² =
  31. 31.485² =
  32. 32.354² =
  33. 33.195² =
  34. 34.240² =
  35. 35.800² =
  36. 36.524² =
  37. 37.873² =
  38. 38.7090² =
  39. 39.512² =
  40. 40.668² =

Answer key

  1. 15547249
  2. 223729
  3. 41209
  4. 3240000
  5. 36638809
  6. 236196
  7. 27373824
  8. 819025
  9. 1562500
  10. 67354849
  11. 209764
  12. 207025
  13. 361201
  14. 99380961
  15. 559504
  16. 44521
  17. 66049
  18. 75076
  19. 208849
  20. 51984
  21. 186624
  22. 649636
  23. 280900
  24. 1454436
  25. 336400
  26. 3038049
  27. 51529
  28. 36096064
  29. 29929
  30. 24649
  31. 235225
  32. 125316
  33. 38025
  34. 57600
  35. 640000
  36. 274576
  37. 762129
  38. 50268100
  39. 262144
  40. 446224

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