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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 678 · 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. 1.176² =
  2. 2.4288² =
  3. 3.2456² =
  4. 4.191² =
  5. 5.3838² =
  6. 6.549² =
  7. 7.1340² =
  8. 8.714² =
  9. 9.732² =
  10. 10.6508² =
  11. 11.802² =
  12. 12.428² =
  13. 13.219² =
  14. 14.5482² =
  15. 15.4440² =
  16. 16.6956² =
  17. 17.481² =
  18. 18.598² =
  19. 19.131² =
  20. 20.647² =
  21. 21.7372² =
  22. 22.4644² =
  23. 23.685² =
  24. 24.288² =
  25. 25.727² =
  26. 26.9532² =
  27. 27.527² =
  28. 28.1035² =
  29. 29.824² =
  30. 30.490² =
  31. 31.516² =
  32. 32.469² =
  33. 33.710² =
  34. 34.403² =
  35. 35.522² =
  36. 36.529² =
  37. 37.444² =
  38. 38.431² =
  39. 39.823² =
  40. 40.966² =

Answer key

  1. 30976
  2. 18386944
  3. 6031936
  4. 36481
  5. 14730244
  6. 301401
  7. 1795600
  8. 509796
  9. 535824
  10. 42354064
  11. 643204
  12. 183184
  13. 47961
  14. 30052324
  15. 19713600
  16. 48385936
  17. 231361
  18. 357604
  19. 17161
  20. 418609
  21. 54346384
  22. 21566736
  23. 469225
  24. 82944
  25. 528529
  26. 90859024
  27. 277729
  28. 1071225
  29. 678976
  30. 240100
  31. 266256
  32. 219961
  33. 504100
  34. 162409
  35. 272484
  36. 279841
  37. 197136
  38. 185761
  39. 677329
  40. 933156

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