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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 291 · 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. 1.3776² =
  2. 2.677² =
  3. 3.101² =
  4. 4.130² =
  5. 5.265² =
  6. 6.278² =
  7. 7.537² =
  8. 8.854² =
  9. 9.944² =
  10. 10.540² =
  11. 11.125² =
  12. 12.7842² =
  13. 13.184² =
  14. 14.610² =
  15. 15.336² =
  16. 16.394² =
  17. 17.248² =
  18. 18.210² =
  19. 19.963² =
  20. 20.1625² =
  21. 21.8458² =
  22. 22.772² =
  23. 23.701² =
  24. 24.766² =
  25. 25.179² =
  26. 26.1269² =
  27. 27.505² =
  28. 28.8195² =
  29. 29.354² =
  30. 30.1038² =
  31. 31.2758² =
  32. 32.815² =
  33. 33.269² =
  34. 34.750² =
  35. 35.246² =
  36. 36.125² =
  37. 37.197² =
  38. 38.6418² =
  39. 39.183² =
  40. 40.261² =

Answer key

  1. 14258176
  2. 458329
  3. 10201
  4. 16900
  5. 70225
  6. 77284
  7. 288369
  8. 729316
  9. 891136
  10. 291600
  11. 15625
  12. 61496964
  13. 33856
  14. 372100
  15. 112896
  16. 155236
  17. 61504
  18. 44100
  19. 927369
  20. 2640625
  21. 71537764
  22. 595984
  23. 491401
  24. 586756
  25. 32041
  26. 1610361
  27. 255025
  28. 67158025
  29. 125316
  30. 1077444
  31. 7606564
  32. 664225
  33. 72361
  34. 562500
  35. 60516
  36. 15625
  37. 38809
  38. 41190724
  39. 33489
  40. 68121

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