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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 719 · 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. 1.759² =
  2. 2.8898² =
  3. 3.8995² =
  4. 4.789² =
  5. 5.1997² =
  6. 6.7133² =
  7. 7.648² =
  8. 8.910² =
  9. 9.999² =
  10. 10.186² =
  11. 11.300² =
  12. 12.133² =
  13. 13.381² =
  14. 14.6044² =
  15. 15.270² =
  16. 16.713² =
  17. 17.241² =
  18. 18.414² =
  19. 19.726² =
  20. 20.433² =
  21. 21.237² =
  22. 22.672² =
  23. 23.3459² =
  24. 24.268² =
  25. 25.410² =
  26. 26.3369² =
  27. 27.329² =
  28. 28.961² =
  29. 29.231² =
  30. 30.201² =
  31. 31.254² =
  32. 32.170² =
  33. 33.834² =
  34. 34.898² =
  35. 35.4227² =
  36. 36.496² =
  37. 37.297² =
  38. 38.223² =
  39. 39.214² =
  40. 40.3993² =

Answer key

  1. 576081
  2. 79174404
  3. 80910025
  4. 622521
  5. 3988009
  6. 50879689
  7. 419904
  8. 828100
  9. 998001
  10. 34596
  11. 90000
  12. 17689
  13. 145161
  14. 36529936
  15. 72900
  16. 508369
  17. 58081
  18. 171396
  19. 527076
  20. 187489
  21. 56169
  22. 451584
  23. 11964681
  24. 71824
  25. 168100
  26. 11350161
  27. 108241
  28. 923521
  29. 53361
  30. 40401
  31. 64516
  32. 28900
  33. 695556
  34. 806404
  35. 17867529
  36. 246016
  37. 88209
  38. 49729
  39. 45796
  40. 15944049

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