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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 438 · 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. 1.972² =
  2. 2.8722² =
  3. 3.439² =
  4. 4.268² =
  5. 5.6472² =
  6. 6.436² =
  7. 7.4708² =
  8. 8.952² =
  9. 9.992² =
  10. 10.106² =
  11. 11.621² =
  12. 12.235² =
  13. 13.172² =
  14. 14.297² =
  15. 15.6218² =
  16. 16.651² =
  17. 17.773² =
  18. 18.3144² =
  19. 19.1786² =
  20. 20.189² =
  21. 21.9268² =
  22. 22.474² =
  23. 23.3669² =
  24. 24.350² =
  25. 25.5247² =
  26. 26.615² =
  27. 27.282² =
  28. 28.816² =
  29. 29.364² =
  30. 30.464² =
  31. 31.284² =
  32. 32.242² =
  33. 33.568² =
  34. 34.317² =
  35. 35.362² =
  36. 36.654² =
  37. 37.3965² =
  38. 38.277² =
  39. 39.9907² =
  40. 40.2192² =

Answer key

  1. 944784
  2. 76073284
  3. 192721
  4. 71824
  5. 41886784
  6. 190096
  7. 22165264
  8. 906304
  9. 984064
  10. 11236
  11. 385641
  12. 55225
  13. 29584
  14. 88209
  15. 38663524
  16. 423801
  17. 597529
  18. 9884736
  19. 3189796
  20. 35721
  21. 85895824
  22. 224676
  23. 13461561
  24. 122500
  25. 27531009
  26. 378225
  27. 79524
  28. 665856
  29. 132496
  30. 215296
  31. 80656
  32. 58564
  33. 322624
  34. 100489
  35. 131044
  36. 427716
  37. 15721225
  38. 76729
  39. 98148649
  40. 4804864

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