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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 857 · 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. 1.929² =
  2. 2.365² =
  3. 3.2073² =
  4. 4.202² =
  5. 5.888² =
  6. 6.156² =
  7. 7.715² =
  8. 8.7314² =
  9. 9.969² =
  10. 10.257² =
  11. 11.852² =
  12. 12.278² =
  13. 13.594² =
  14. 14.7044² =
  15. 15.125² =
  16. 16.598² =
  17. 17.7245² =
  18. 18.243² =
  19. 19.159² =
  20. 20.863² =
  21. 21.2156² =
  22. 22.189² =
  23. 23.391² =
  24. 24.823² =
  25. 25.2188² =
  26. 26.3846² =
  27. 27.231² =
  28. 28.976² =
  29. 29.2573² =
  30. 30.489² =
  31. 31.641² =
  32. 32.995² =
  33. 33.401² =
  34. 34.278² =
  35. 35.819² =
  36. 36.318² =
  37. 37.396² =
  38. 38.520² =
  39. 39.9693² =
  40. 40.556² =

Answer key

  1. 863041
  2. 133225
  3. 4297329
  4. 40804
  5. 788544
  6. 24336
  7. 511225
  8. 53494596
  9. 938961
  10. 66049
  11. 725904
  12. 77284
  13. 352836
  14. 49617936
  15. 15625
  16. 357604
  17. 52490025
  18. 59049
  19. 25281
  20. 744769
  21. 4648336
  22. 35721
  23. 152881
  24. 677329
  25. 4787344
  26. 14791716
  27. 53361
  28. 952576
  29. 6620329
  30. 239121
  31. 410881
  32. 990025
  33. 160801
  34. 77284
  35. 670761
  36. 101124
  37. 156816
  38. 270400
  39. 93954249
  40. 309136

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