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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 159 · 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. 1.411² =
  2. 2.144² =
  3. 3.115² =
  4. 4.346² =
  5. 5.569² =
  6. 6.530² =
  7. 7.3110² =
  8. 8.699² =
  9. 9.960² =
  10. 10.446² =
  11. 11.595² =
  12. 12.613² =
  13. 13.960² =
  14. 14.2705² =
  15. 15.197² =
  16. 16.120² =
  17. 17.903² =
  18. 18.963² =
  19. 19.233² =
  20. 20.294² =
  21. 21.407² =
  22. 22.192² =
  23. 23.833² =
  24. 24.8745² =
  25. 25.243² =
  26. 26.790² =
  27. 27.813² =
  28. 28.876² =
  29. 29.853² =
  30. 30.9940² =
  31. 31.784² =
  32. 32.759² =
  33. 33.4165² =
  34. 34.803² =
  35. 35.444² =
  36. 36.643² =
  37. 37.366² =
  38. 38.325² =
  39. 39.721² =
  40. 40.456² =

Answer key

  1. 168921
  2. 20736
  3. 13225
  4. 119716
  5. 323761
  6. 280900
  7. 9672100
  8. 488601
  9. 921600
  10. 198916
  11. 354025
  12. 375769
  13. 921600
  14. 7317025
  15. 38809
  16. 14400
  17. 815409
  18. 927369
  19. 54289
  20. 86436
  21. 165649
  22. 36864
  23. 693889
  24. 76475025
  25. 59049
  26. 624100
  27. 660969
  28. 767376
  29. 727609
  30. 98803600
  31. 614656
  32. 576081
  33. 17347225
  34. 644809
  35. 197136
  36. 413449
  37. 133956
  38. 105625
  39. 519841
  40. 207936

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