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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 398 · 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. 1.399² =
  2. 2.254² =
  3. 3.2870² =
  4. 4.584² =
  5. 5.922² =
  6. 6.998² =
  7. 7.481² =
  8. 8.3650² =
  9. 9.266² =
  10. 10.4463² =
  11. 11.5993² =
  12. 12.526² =
  13. 13.159² =
  14. 14.970² =
  15. 15.146² =
  16. 16.874² =
  17. 17.284² =
  18. 18.3788² =
  19. 19.3731² =
  20. 20.374² =
  21. 21.933² =
  22. 22.771² =
  23. 23.6077² =
  24. 24.316² =
  25. 25.374² =
  26. 26.347² =
  27. 27.516² =
  28. 28.7187² =
  29. 29.945² =
  30. 30.968² =
  31. 31.551² =
  32. 32.133² =
  33. 33.118² =
  34. 34.590² =
  35. 35.459² =
  36. 36.854² =
  37. 37.705² =
  38. 38.310² =
  39. 39.8192² =
  40. 40.876² =

Answer key

  1. 159201
  2. 64516
  3. 8236900
  4. 341056
  5. 850084
  6. 996004
  7. 231361
  8. 13322500
  9. 70756
  10. 19918369
  11. 35916049
  12. 276676
  13. 25281
  14. 940900
  15. 21316
  16. 763876
  17. 80656
  18. 14348944
  19. 13920361
  20. 139876
  21. 870489
  22. 594441
  23. 36929929
  24. 99856
  25. 139876
  26. 120409
  27. 266256
  28. 51652969
  29. 893025
  30. 937024
  31. 303601
  32. 17689
  33. 13924
  34. 348100
  35. 210681
  36. 729316
  37. 497025
  38. 96100
  39. 67108864
  40. 767376

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