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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 942 · 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. 1.885² =
  2. 2.579² =
  3. 3.926² =
  4. 4.157² =
  5. 5.575² =
  6. 6.503² =
  7. 7.131² =
  8. 8.1908² =
  9. 9.698² =
  10. 10.792² =
  11. 11.142² =
  12. 12.4092² =
  13. 13.363² =
  14. 14.138² =
  15. 15.109² =
  16. 16.5009² =
  17. 17.3552² =
  18. 18.6200² =
  19. 19.873² =
  20. 20.251² =
  21. 21.734² =
  22. 22.610² =
  23. 23.4360² =
  24. 24.315² =
  25. 25.666² =
  26. 26.3850² =
  27. 27.3897² =
  28. 28.172² =
  29. 29.624² =
  30. 30.246² =
  31. 31.362² =
  32. 32.555² =
  33. 33.112² =
  34. 34.5055² =
  35. 35.325² =
  36. 36.254² =
  37. 37.2225² =
  38. 38.608² =
  39. 39.440² =
  40. 40.6429² =

Answer key

  1. 783225
  2. 335241
  3. 857476
  4. 24649
  5. 330625
  6. 253009
  7. 17161
  8. 3640464
  9. 487204
  10. 627264
  11. 20164
  12. 16744464
  13. 131769
  14. 19044
  15. 11881
  16. 25090081
  17. 12616704
  18. 38440000
  19. 762129
  20. 63001
  21. 538756
  22. 372100
  23. 19009600
  24. 99225
  25. 443556
  26. 14822500
  27. 15186609
  28. 29584
  29. 389376
  30. 60516
  31. 131044
  32. 308025
  33. 12544
  34. 25553025
  35. 105625
  36. 64516
  37. 4950625
  38. 369664
  39. 193600
  40. 41332041

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