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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 177 · 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. 1.627² =
  2. 2.156² =
  3. 3.413² =
  4. 4.376² =
  5. 5.176² =
  6. 6.359² =
  7. 7.934² =
  8. 8.804² =
  9. 9.807² =
  10. 10.739² =
  11. 11.475² =
  12. 12.9650² =
  13. 13.3161² =
  14. 14.3507² =
  15. 15.927² =
  16. 16.772² =
  17. 17.194² =
  18. 18.272² =
  19. 19.166² =
  20. 20.788² =
  21. 21.3088² =
  22. 22.294² =
  23. 23.710² =
  24. 24.903² =
  25. 25.770² =
  26. 26.644² =
  27. 27.135² =
  28. 28.7078² =
  29. 29.818² =
  30. 30.6491² =
  31. 31.4233² =
  32. 32.4528² =
  33. 33.256² =
  34. 34.798² =
  35. 35.340² =
  36. 36.307² =
  37. 37.3237² =
  38. 38.536² =
  39. 39.242² =
  40. 40.225² =

Answer key

  1. 393129
  2. 24336
  3. 170569
  4. 141376
  5. 30976
  6. 128881
  7. 872356
  8. 646416
  9. 651249
  10. 546121
  11. 225625
  12. 93122500
  13. 9991921
  14. 12299049
  15. 859329
  16. 595984
  17. 37636
  18. 73984
  19. 27556
  20. 620944
  21. 9535744
  22. 86436
  23. 504100
  24. 815409
  25. 592900
  26. 414736
  27. 18225
  28. 50098084
  29. 669124
  30. 42133081
  31. 17918289
  32. 20502784
  33. 65536
  34. 636804
  35. 115600
  36. 94249
  37. 10478169
  38. 287296
  39. 58564
  40. 50625

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