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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 589 · 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. 1.1187² =
  2. 2.755² =
  3. 3.4153² =
  4. 4.853² =
  5. 5.414² =
  6. 6.317² =
  7. 7.223² =
  8. 8.528² =
  9. 9.1375² =
  10. 10.399² =
  11. 11.299² =
  12. 12.318² =
  13. 13.913² =
  14. 14.506² =
  15. 15.603² =
  16. 16.2871² =
  17. 17.299² =
  18. 18.5117² =
  19. 19.4643² =
  20. 20.372² =
  21. 21.306² =
  22. 22.878² =
  23. 23.767² =
  24. 24.971² =
  25. 25.910² =
  26. 26.3350² =
  27. 27.740² =
  28. 28.5558² =
  29. 29.536² =
  30. 30.478² =
  31. 31.724² =
  32. 32.9329² =
  33. 33.722² =
  34. 34.923² =
  35. 35.704² =
  36. 36.696² =
  37. 37.643² =
  38. 38.331² =
  39. 39.4498² =
  40. 40.330² =

Answer key

  1. 1408969
  2. 570025
  3. 17247409
  4. 727609
  5. 171396
  6. 100489
  7. 49729
  8. 278784
  9. 1890625
  10. 159201
  11. 89401
  12. 101124
  13. 833569
  14. 256036
  15. 363609
  16. 8242641
  17. 89401
  18. 26183689
  19. 21557449
  20. 138384
  21. 93636
  22. 770884
  23. 588289
  24. 942841
  25. 828100
  26. 11222500
  27. 547600
  28. 30891364
  29. 287296
  30. 228484
  31. 524176
  32. 87030241
  33. 521284
  34. 851929
  35. 495616
  36. 484416
  37. 413449
  38. 109561
  39. 20232004
  40. 108900

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