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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 294 · 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. 1.971² =
  2. 2.834² =
  3. 3.856² =
  4. 4.231² =
  5. 5.9485² =
  6. 6.6526² =
  7. 7.225² =
  8. 8.821² =
  9. 9.902² =
  10. 10.352² =
  11. 11.430² =
  12. 12.912² =
  13. 13.654² =
  14. 14.3288² =
  15. 15.403² =
  16. 16.834² =
  17. 17.734² =
  18. 18.8339² =
  19. 19.405² =
  20. 20.995² =
  21. 21.1899² =
  22. 22.498² =
  23. 23.451² =
  24. 24.8246² =
  25. 25.825² =
  26. 26.203² =
  27. 27.683² =
  28. 28.795² =
  29. 29.811² =
  30. 30.308² =
  31. 31.577² =
  32. 32.8471² =
  33. 33.113² =
  34. 34.1887² =
  35. 35.557² =
  36. 36.769² =
  37. 37.819² =
  38. 38.837² =
  39. 39.801² =
  40. 40.944² =

Answer key

  1. 942841
  2. 695556
  3. 732736
  4. 53361
  5. 89965225
  6. 42588676
  7. 50625
  8. 674041
  9. 813604
  10. 123904
  11. 184900
  12. 831744
  13. 427716
  14. 10810944
  15. 162409
  16. 695556
  17. 538756
  18. 69538921
  19. 164025
  20. 990025
  21. 3606201
  22. 248004
  23. 203401
  24. 67996516
  25. 680625
  26. 41209
  27. 466489
  28. 632025
  29. 657721
  30. 94864
  31. 332929
  32. 71757841
  33. 12769
  34. 3560769
  35. 310249
  36. 591361
  37. 670761
  38. 700569
  39. 641601
  40. 891136

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