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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 381 · 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. 1.505² =
  2. 2.8876² =
  3. 3.2451² =
  4. 4.104² =
  5. 5.844² =
  6. 6.977² =
  7. 7.963² =
  8. 8.359² =
  9. 9.233² =
  10. 10.148² =
  11. 11.9489² =
  12. 12.1863² =
  13. 13.492² =
  14. 14.560² =
  15. 15.3837² =
  16. 16.638² =
  17. 17.154² =
  18. 18.130² =
  19. 19.969² =
  20. 20.1607² =
  21. 21.627² =
  22. 22.7453² =
  23. 23.892² =
  24. 24.734² =
  25. 25.5990² =
  26. 26.805² =
  27. 27.225² =
  28. 28.471² =
  29. 29.250² =
  30. 30.533² =
  31. 31.458² =
  32. 32.7226² =
  33. 33.9341² =
  34. 34.386² =
  35. 35.3988² =
  36. 36.357² =
  37. 37.755² =
  38. 38.165² =
  39. 39.505² =
  40. 40.8679² =

Answer key

  1. 255025
  2. 78783376
  3. 6007401
  4. 10816
  5. 712336
  6. 954529
  7. 927369
  8. 128881
  9. 54289
  10. 21904
  11. 90041121
  12. 3470769
  13. 242064
  14. 313600
  15. 14722569
  16. 407044
  17. 23716
  18. 16900
  19. 938961
  20. 2582449
  21. 393129
  22. 55547209
  23. 795664
  24. 538756
  25. 35880100
  26. 648025
  27. 50625
  28. 221841
  29. 62500
  30. 284089
  31. 209764
  32. 52215076
  33. 87254281
  34. 148996
  35. 15904144
  36. 127449
  37. 570025
  38. 27225
  39. 255025
  40. 75325041

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