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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 345 · 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. 1.7556² =
  2. 2.480² =
  3. 3.1958² =
  4. 4.733² =
  5. 5.1014² =
  6. 6.673² =
  7. 7.191² =
  8. 8.5659² =
  9. 9.1872² =
  10. 10.6290² =
  11. 11.5393² =
  12. 12.608² =
  13. 13.567² =
  14. 14.435² =
  15. 15.282² =
  16. 16.8937² =
  17. 17.572² =
  18. 18.1068² =
  19. 19.970² =
  20. 20.873² =
  21. 21.980² =
  22. 22.131² =
  23. 23.436² =
  24. 24.946² =
  25. 25.1017² =
  26. 26.913² =
  27. 27.281² =
  28. 28.299² =
  29. 29.829² =
  30. 30.766² =
  31. 31.341² =
  32. 32.8702² =
  33. 33.152² =
  34. 34.226² =
  35. 35.8382² =
  36. 36.4840² =
  37. 37.8744² =
  38. 38.781² =
  39. 39.477² =
  40. 40.2282² =

Answer key

  1. 57093136
  2. 230400
  3. 3833764
  4. 537289
  5. 1028196
  6. 452929
  7. 36481
  8. 32024281
  9. 3504384
  10. 39564100
  11. 29084449
  12. 369664
  13. 321489
  14. 189225
  15. 79524
  16. 79869969
  17. 327184
  18. 1140624
  19. 940900
  20. 762129
  21. 960400
  22. 17161
  23. 190096
  24. 894916
  25. 1034289
  26. 833569
  27. 78961
  28. 89401
  29. 687241
  30. 586756
  31. 116281
  32. 75724804
  33. 23104
  34. 51076
  35. 70257924
  36. 23425600
  37. 76457536
  38. 609961
  39. 227529
  40. 5207524

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