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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 266 · 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. 1.7335² =
  2. 2.206² =
  3. 3.267² =
  4. 4.3631² =
  5. 5.490² =
  6. 6.404² =
  7. 7.651² =
  8. 8.6682² =
  9. 9.362² =
  10. 10.863² =
  11. 11.373² =
  12. 12.217² =
  13. 13.2228² =
  14. 14.9382² =
  15. 15.961² =
  16. 16.231² =
  17. 17.102² =
  18. 18.8577² =
  19. 19.355² =
  20. 20.809² =
  21. 21.5491² =
  22. 22.946² =
  23. 23.1062² =
  24. 24.559² =
  25. 25.740² =
  26. 26.7359² =
  27. 27.4831² =
  28. 28.684² =
  29. 29.696² =
  30. 30.944² =
  31. 31.184² =
  32. 32.3246² =
  33. 33.5136² =
  34. 34.349² =
  35. 35.510² =
  36. 36.584² =
  37. 37.3477² =
  38. 38.2285² =
  39. 39.336² =
  40. 40.814² =

Answer key

  1. 53802225
  2. 42436
  3. 71289
  4. 13184161
  5. 240100
  6. 163216
  7. 423801
  8. 44649124
  9. 131044
  10. 744769
  11. 139129
  12. 47089
  13. 4963984
  14. 88021924
  15. 923521
  16. 53361
  17. 10404
  18. 73564929
  19. 126025
  20. 654481
  21. 30151081
  22. 894916
  23. 1127844
  24. 312481
  25. 547600
  26. 54154881
  27. 23338561
  28. 467856
  29. 484416
  30. 891136
  31. 33856
  32. 10536516
  33. 26378496
  34. 121801
  35. 260100
  36. 341056
  37. 12089529
  38. 5221225
  39. 112896
  40. 662596

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