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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 547 · 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. 1.888² =
  2. 2.3120² =
  3. 3.507² =
  4. 4.140² =
  5. 5.871² =
  6. 6.790² =
  7. 7.683² =
  8. 8.866² =
  9. 9.649² =
  10. 10.678² =
  11. 11.8495² =
  12. 12.300² =
  13. 13.4478² =
  14. 14.510² =
  15. 15.287² =
  16. 16.654² =
  17. 17.6855² =
  18. 18.222² =
  19. 19.463² =
  20. 20.559² =
  21. 21.499² =
  22. 22.597² =
  23. 23.724² =
  24. 24.499² =
  25. 25.715² =
  26. 26.495² =
  27. 27.711² =
  28. 28.136² =
  29. 29.5301² =
  30. 30.787² =
  31. 31.8671² =
  32. 32.3937² =
  33. 33.688² =
  34. 34.2421² =
  35. 35.197² =
  36. 36.2896² =
  37. 37.695² =
  38. 38.516² =
  39. 39.820² =
  40. 40.173² =

Answer key

  1. 788544
  2. 9734400
  3. 257049
  4. 19600
  5. 758641
  6. 624100
  7. 466489
  8. 749956
  9. 421201
  10. 459684
  11. 72165025
  12. 90000
  13. 20052484
  14. 260100
  15. 82369
  16. 427716
  17. 46991025
  18. 49284
  19. 214369
  20. 312481
  21. 249001
  22. 356409
  23. 524176
  24. 249001
  25. 511225
  26. 245025
  27. 505521
  28. 18496
  29. 28100601
  30. 619369
  31. 75186241
  32. 15499969
  33. 473344
  34. 5861241
  35. 38809
  36. 8386816
  37. 483025
  38. 266256
  39. 672400
  40. 29929

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