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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 574 · 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. 1.893² =
  2. 2.6682² =
  3. 3.638² =
  4. 4.6101² =
  5. 5.801² =
  6. 6.156² =
  7. 7.439² =
  8. 8.7752² =
  9. 9.679² =
  10. 10.5080² =
  11. 11.138² =
  12. 12.3133² =
  13. 13.107² =
  14. 14.727² =
  15. 15.7050² =
  16. 16.971² =
  17. 17.727² =
  18. 18.911² =
  19. 19.5060² =
  20. 20.5100² =
  21. 21.6207² =
  22. 22.702² =
  23. 23.833² =
  24. 24.592² =
  25. 25.489² =
  26. 26.923² =
  27. 27.401² =
  28. 28.253² =
  29. 29.1701² =
  30. 30.848² =
  31. 31.130² =
  32. 32.969² =
  33. 33.941² =
  34. 34.4145² =
  35. 35.5479² =
  36. 36.348² =
  37. 37.8572² =
  38. 38.5614² =
  39. 39.8797² =
  40. 40.935² =

Answer key

  1. 797449
  2. 44649124
  3. 407044
  4. 37222201
  5. 641601
  6. 24336
  7. 192721
  8. 60093504
  9. 461041
  10. 25806400
  11. 19044
  12. 9815689
  13. 11449
  14. 528529
  15. 49702500
  16. 942841
  17. 528529
  18. 829921
  19. 25603600
  20. 26010000
  21. 38526849
  22. 492804
  23. 693889
  24. 350464
  25. 239121
  26. 851929
  27. 160801
  28. 64009
  29. 2893401
  30. 719104
  31. 16900
  32. 938961
  33. 885481
  34. 17181025
  35. 30019441
  36. 121104
  37. 73479184
  38. 31516996
  39. 77387209
  40. 874225

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