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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 592 · 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. 1.981² =
  2. 2.1956² =
  3. 3.887² =
  4. 4.3086² =
  5. 5.471² =
  6. 6.649² =
  7. 7.2727² =
  8. 8.299² =
  9. 9.4134² =
  10. 10.301² =
  11. 11.804² =
  12. 12.627² =
  13. 13.445² =
  14. 14.875² =
  15. 15.5692² =
  16. 16.387² =
  17. 17.856² =
  18. 18.9994² =
  19. 19.918² =
  20. 20.3819² =
  21. 21.251² =
  22. 22.337² =
  23. 23.108² =
  24. 24.241² =
  25. 25.285² =
  26. 26.723² =
  27. 27.753² =
  28. 28.264² =
  29. 29.8003² =
  30. 30.286² =
  31. 31.4446² =
  32. 32.908² =
  33. 33.915² =
  34. 34.830² =
  35. 35.165² =
  36. 36.6751² =
  37. 37.988² =
  38. 38.550² =
  39. 39.4834² =
  40. 40.136² =

Answer key

  1. 962361
  2. 3825936
  3. 786769
  4. 9523396
  5. 221841
  6. 421201
  7. 7436529
  8. 89401
  9. 17089956
  10. 90601
  11. 646416
  12. 393129
  13. 198025
  14. 765625
  15. 32398864
  16. 149769
  17. 732736
  18. 99880036
  19. 842724
  20. 14584761
  21. 63001
  22. 113569
  23. 11664
  24. 58081
  25. 81225
  26. 522729
  27. 567009
  28. 69696
  29. 64048009
  30. 81796
  31. 19766916
  32. 824464
  33. 837225
  34. 688900
  35. 27225
  36. 45576001
  37. 976144
  38. 302500
  39. 23367556
  40. 18496

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