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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 430 · 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. 1.625² =
  2. 2.7650² =
  3. 3.305² =
  4. 4.1050² =
  5. 5.712² =
  6. 6.109² =
  7. 7.608² =
  8. 8.423² =
  9. 9.7619² =
  10. 10.1682² =
  11. 11.3364² =
  12. 12.433² =
  13. 13.7710² =
  14. 14.235² =
  15. 15.692² =
  16. 16.514² =
  17. 17.4503² =
  18. 18.298² =
  19. 19.693² =
  20. 20.481² =
  21. 21.254² =
  22. 22.148² =
  23. 23.4588² =
  24. 24.4542² =
  25. 25.573² =
  26. 26.3879² =
  27. 27.8486² =
  28. 28.927² =
  29. 29.782² =
  30. 30.240² =
  31. 31.460² =
  32. 32.500² =
  33. 33.240² =
  34. 34.800² =
  35. 35.640² =
  36. 36.331² =
  37. 37.993² =
  38. 38.1937² =
  39. 39.4954² =
  40. 40.818² =

Answer key

  1. 390625
  2. 58522500
  3. 93025
  4. 1102500
  5. 506944
  6. 11881
  7. 369664
  8. 178929
  9. 58049161
  10. 2829124
  11. 11316496
  12. 187489
  13. 59444100
  14. 55225
  15. 478864
  16. 264196
  17. 20277009
  18. 88804
  19. 480249
  20. 231361
  21. 64516
  22. 21904
  23. 21049744
  24. 20629764
  25. 328329
  26. 15046641
  27. 72012196
  28. 859329
  29. 611524
  30. 57600
  31. 211600
  32. 250000
  33. 57600
  34. 640000
  35. 409600
  36. 109561
  37. 986049
  38. 3751969
  39. 24542116
  40. 669124

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