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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 550 · 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. 1.998² =
  2. 2.681² =
  3. 3.8860² =
  4. 4.118² =
  5. 5.236² =
  6. 6.514² =
  7. 7.604² =
  8. 8.5394² =
  9. 9.442² =
  10. 10.862² =
  11. 11.865² =
  12. 12.926² =
  13. 13.344² =
  14. 14.521² =
  15. 15.757² =
  16. 16.470² =
  17. 17.361² =
  18. 18.2546² =
  19. 19.299² =
  20. 20.742² =
  21. 21.478² =
  22. 22.363² =
  23. 23.249² =
  24. 24.205² =
  25. 25.514² =
  26. 26.130² =
  27. 27.805² =
  28. 28.579² =
  29. 29.570² =
  30. 30.214² =
  31. 31.1113² =
  32. 32.879² =
  33. 33.7233² =
  34. 34.394² =
  35. 35.9370² =
  36. 36.370² =
  37. 37.3918² =
  38. 38.552² =
  39. 39.479² =
  40. 40.764² =

Answer key

  1. 996004
  2. 463761
  3. 78499600
  4. 13924
  5. 55696
  6. 264196
  7. 364816
  8. 29095236
  9. 195364
  10. 743044
  11. 748225
  12. 857476
  13. 118336
  14. 271441
  15. 573049
  16. 220900
  17. 130321
  18. 6482116
  19. 89401
  20. 550564
  21. 228484
  22. 131769
  23. 62001
  24. 42025
  25. 264196
  26. 16900
  27. 648025
  28. 335241
  29. 324900
  30. 45796
  31. 1238769
  32. 772641
  33. 52316289
  34. 155236
  35. 87796900
  36. 136900
  37. 15350724
  38. 304704
  39. 229441
  40. 583696

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