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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 67 · 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. 1.376² =
  2. 2.389² =
  3. 3.867² =
  4. 4.668² =
  5. 5.127² =
  6. 6.3343² =
  7. 7.432² =
  8. 8.463² =
  9. 9.362² =
  10. 10.4918² =
  11. 11.2080² =
  12. 12.967² =
  13. 13.861² =
  14. 14.619² =
  15. 15.179² =
  16. 16.9702² =
  17. 17.418² =
  18. 18.265² =
  19. 19.224² =
  20. 20.9281² =
  21. 21.996² =
  22. 22.906² =
  23. 23.503² =
  24. 24.274² =
  25. 25.400² =
  26. 26.451² =
  27. 27.838² =
  28. 28.104² =
  29. 29.806² =
  30. 30.812² =
  31. 31.1029² =
  32. 32.464² =
  33. 33.944² =
  34. 34.512² =
  35. 35.982² =
  36. 36.3286² =
  37. 37.194² =
  38. 38.713² =
  39. 39.327² =
  40. 40.577² =

Answer key

  1. 141376
  2. 151321
  3. 751689
  4. 446224
  5. 16129
  6. 11175649
  7. 186624
  8. 214369
  9. 131044
  10. 24186724
  11. 4326400
  12. 935089
  13. 741321
  14. 383161
  15. 32041
  16. 94128804
  17. 174724
  18. 70225
  19. 50176
  20. 86136961
  21. 992016
  22. 820836
  23. 253009
  24. 75076
  25. 160000
  26. 203401
  27. 702244
  28. 10816
  29. 649636
  30. 659344
  31. 1058841
  32. 215296
  33. 891136
  34. 262144
  35. 964324
  36. 10797796
  37. 37636
  38. 508369
  39. 106929
  40. 332929

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