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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 827 · 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. 1.691² =
  2. 2.646² =
  3. 3.579² =
  4. 4.700² =
  5. 5.727² =
  6. 6.574² =
  7. 7.7903² =
  8. 8.1512² =
  9. 9.6758² =
  10. 10.421² =
  11. 11.627² =
  12. 12.4322² =
  13. 13.551² =
  14. 14.141² =
  15. 15.645² =
  16. 16.439² =
  17. 17.2532² =
  18. 18.263² =
  19. 19.623² =
  20. 20.3041² =
  21. 21.637² =
  22. 22.902² =
  23. 23.212² =
  24. 24.960² =
  25. 25.813² =
  26. 26.900² =
  27. 27.116² =
  28. 28.739² =
  29. 29.157² =
  30. 30.112² =
  31. 31.179² =
  32. 32.504² =
  33. 33.905² =
  34. 34.606² =
  35. 35.716² =
  36. 36.9208² =
  37. 37.730² =
  38. 38.441² =
  39. 39.3076² =
  40. 40.967² =

Answer key

  1. 477481
  2. 417316
  3. 335241
  4. 490000
  5. 528529
  6. 329476
  7. 62457409
  8. 2286144
  9. 45670564
  10. 177241
  11. 393129
  12. 18679684
  13. 303601
  14. 19881
  15. 416025
  16. 192721
  17. 6411024
  18. 69169
  19. 388129
  20. 9247681
  21. 405769
  22. 813604
  23. 44944
  24. 921600
  25. 660969
  26. 810000
  27. 13456
  28. 546121
  29. 24649
  30. 12544
  31. 32041
  32. 254016
  33. 819025
  34. 367236
  35. 512656
  36. 84787264
  37. 532900
  38. 194481
  39. 9461776
  40. 935089

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