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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 313 · 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. 1.7311² =
  2. 2.7996² =
  3. 3.7657² =
  4. 4.689² =
  5. 5.800² =
  6. 6.4834² =
  7. 7.153² =
  8. 8.8157² =
  9. 9.3921² =
  10. 10.772² =
  11. 11.1672² =
  12. 12.365² =
  13. 13.8557² =
  14. 14.6064² =
  15. 15.7106² =
  16. 16.253² =
  17. 17.399² =
  18. 18.749² =
  19. 19.2177² =
  20. 20.2147² =
  21. 21.454² =
  22. 22.286² =
  23. 23.303² =
  24. 24.777² =
  25. 25.323² =
  26. 26.323² =
  27. 27.1289² =
  28. 28.796² =
  29. 29.4170² =
  30. 30.532² =
  31. 31.678² =
  32. 32.6989² =
  33. 33.743² =
  34. 34.636² =
  35. 35.416² =
  36. 36.315² =
  37. 37.785² =
  38. 38.142² =
  39. 39.259² =
  40. 40.299² =

Answer key

  1. 53450721
  2. 63936016
  3. 58629649
  4. 474721
  5. 640000
  6. 23367556
  7. 23409
  8. 66536649
  9. 15374241
  10. 595984
  11. 2795584
  12. 133225
  13. 73222249
  14. 36772096
  15. 50495236
  16. 64009
  17. 159201
  18. 561001
  19. 4739329
  20. 4609609
  21. 206116
  22. 81796
  23. 91809
  24. 603729
  25. 104329
  26. 104329
  27. 1661521
  28. 633616
  29. 17388900
  30. 283024
  31. 459684
  32. 48846121
  33. 552049
  34. 404496
  35. 173056
  36. 99225
  37. 616225
  38. 20164
  39. 67081
  40. 89401

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