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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 282 · 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. 1.990² =
  2. 2.685² =
  3. 3.9048² =
  4. 4.819² =
  5. 5.789² =
  6. 6.958² =
  7. 7.8670² =
  8. 8.948² =
  9. 9.818² =
  10. 10.319² =
  11. 11.8590² =
  12. 12.259² =
  13. 13.885² =
  14. 14.259² =
  15. 15.8573² =
  16. 16.518² =
  17. 17.6931² =
  18. 18.4844² =
  19. 19.7461² =
  20. 20.854² =
  21. 21.734² =
  22. 22.458² =
  23. 23.1048² =
  24. 24.278² =
  25. 25.323² =
  26. 26.342² =
  27. 27.168² =
  28. 28.530² =
  29. 29.332² =
  30. 30.125² =
  31. 31.5238² =
  32. 32.194² =
  33. 33.723² =
  34. 34.2161² =
  35. 35.536² =
  36. 36.312² =
  37. 37.853² =
  38. 38.2989² =
  39. 39.652² =
  40. 40.179² =

Answer key

  1. 980100
  2. 469225
  3. 81866304
  4. 670761
  5. 622521
  6. 917764
  7. 75168900
  8. 898704
  9. 669124
  10. 101761
  11. 73788100
  12. 67081
  13. 783225
  14. 67081
  15. 73496329
  16. 268324
  17. 48038761
  18. 23464336
  19. 55666521
  20. 729316
  21. 538756
  22. 209764
  23. 1098304
  24. 77284
  25. 104329
  26. 116964
  27. 28224
  28. 280900
  29. 110224
  30. 15625
  31. 27436644
  32. 37636
  33. 522729
  34. 4669921
  35. 287296
  36. 97344
  37. 727609
  38. 8934121
  39. 425104
  40. 32041

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