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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 64 · 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. 1.568² =
  2. 2.177² =
  3. 3.277² =
  4. 4.499² =
  5. 5.710² =
  6. 6.1108² =
  7. 7.533² =
  8. 8.628² =
  9. 9.7040² =
  10. 10.2504² =
  11. 11.864² =
  12. 12.957² =
  13. 13.773² =
  14. 14.8679² =
  15. 15.4048² =
  16. 16.481² =
  17. 17.704² =
  18. 18.973² =
  19. 19.913² =
  20. 20.260² =
  21. 21.259² =
  22. 22.9245² =
  23. 23.8180² =
  24. 24.8702² =
  25. 25.5387² =
  26. 26.1284² =
  27. 27.671² =
  28. 28.745² =
  29. 29.7168² =
  30. 30.597² =
  31. 31.571² =
  32. 32.500² =
  33. 33.3073² =
  34. 34.393² =
  35. 35.627² =
  36. 36.265² =
  37. 37.336² =
  38. 38.295² =
  39. 39.8384² =
  40. 40.229² =

Answer key

  1. 322624
  2. 31329
  3. 76729
  4. 249001
  5. 504100
  6. 1227664
  7. 284089
  8. 394384
  9. 49561600
  10. 6270016
  11. 746496
  12. 915849
  13. 597529
  14. 75325041
  15. 16386304
  16. 231361
  17. 495616
  18. 946729
  19. 833569
  20. 67600
  21. 67081
  22. 85470025
  23. 66912400
  24. 75724804
  25. 29019769
  26. 1648656
  27. 450241
  28. 555025
  29. 51380224
  30. 356409
  31. 326041
  32. 250000
  33. 9443329
  34. 154449
  35. 393129
  36. 70225
  37. 112896
  38. 87025
  39. 70291456
  40. 52441

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