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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 182 · 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. 1.864² =
  2. 2.140² =
  3. 3.155² =
  4. 4.252² =
  5. 5.516² =
  6. 6.9601² =
  7. 7.849² =
  8. 8.810² =
  9. 9.108² =
  10. 10.256² =
  11. 11.157² =
  12. 12.6189² =
  13. 13.331² =
  14. 14.192² =
  15. 15.316² =
  16. 16.7521² =
  17. 17.1310² =
  18. 18.230² =
  19. 19.537² =
  20. 20.584² =
  21. 21.667² =
  22. 22.843² =
  23. 23.2213² =
  24. 24.883² =
  25. 25.247² =
  26. 26.600² =
  27. 27.4842² =
  28. 28.560² =
  29. 29.944² =
  30. 30.5798² =
  31. 31.9663² =
  32. 32.897² =
  33. 33.8429² =
  34. 34.763² =
  35. 35.7038² =
  36. 36.709² =
  37. 37.8741² =
  38. 38.283² =
  39. 39.195² =
  40. 40.740² =

Answer key

  1. 746496
  2. 19600
  3. 24025
  4. 63504
  5. 266256
  6. 92179201
  7. 720801
  8. 656100
  9. 11664
  10. 65536
  11. 24649
  12. 38303721
  13. 109561
  14. 36864
  15. 99856
  16. 56565441
  17. 1716100
  18. 52900
  19. 288369
  20. 341056
  21. 444889
  22. 710649
  23. 4897369
  24. 779689
  25. 61009
  26. 360000
  27. 23444964
  28. 313600
  29. 891136
  30. 33616804
  31. 93373569
  32. 804609
  33. 71048041
  34. 582169
  35. 49533444
  36. 502681
  37. 76405081
  38. 80089
  39. 38025
  40. 547600

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