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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 340 · 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. 1.626² =
  2. 2.670² =
  3. 3.958² =
  4. 4.207² =
  5. 5.687² =
  6. 6.5567² =
  7. 7.287² =
  8. 8.8113² =
  9. 9.753² =
  10. 10.8886² =
  11. 11.324² =
  12. 12.7856² =
  13. 13.7773² =
  14. 14.5163² =
  15. 15.637² =
  16. 16.835² =
  17. 17.4540² =
  18. 18.157² =
  19. 19.672² =
  20. 20.167² =
  21. 21.864² =
  22. 22.245² =
  23. 23.8435² =
  24. 24.9986² =
  25. 25.950² =
  26. 26.920² =
  27. 27.107² =
  28. 28.263² =
  29. 29.135² =
  30. 30.383² =
  31. 31.121² =
  32. 32.3741² =
  33. 33.690² =
  34. 34.362² =
  35. 35.3219² =
  36. 36.1703² =
  37. 37.980² =
  38. 38.332² =
  39. 39.958² =
  40. 40.125² =

Answer key

  1. 391876
  2. 448900
  3. 917764
  4. 42849
  5. 471969
  6. 30991489
  7. 82369
  8. 65820769
  9. 567009
  10. 78960996
  11. 104976
  12. 61716736
  13. 60419529
  14. 26656569
  15. 405769
  16. 697225
  17. 20611600
  18. 24649
  19. 451584
  20. 27889
  21. 746496
  22. 60025
  23. 71149225
  24. 99720196
  25. 902500
  26. 846400
  27. 11449
  28. 69169
  29. 18225
  30. 146689
  31. 14641
  32. 13995081
  33. 476100
  34. 131044
  35. 10361961
  36. 2900209
  37. 960400
  38. 110224
  39. 917764
  40. 15625

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