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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 484 · 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. 1.6208² =
  2. 2.116² =
  3. 3.3299² =
  4. 4.181² =
  5. 5.875² =
  6. 6.790² =
  7. 7.4869² =
  8. 8.111² =
  9. 9.656² =
  10. 10.509² =
  11. 11.388² =
  12. 12.9418² =
  13. 13.536² =
  14. 14.3553² =
  15. 15.748² =
  16. 16.395² =
  17. 17.477² =
  18. 18.8300² =
  19. 19.3030² =
  20. 20.847² =
  21. 21.214² =
  22. 22.456² =
  23. 23.624² =
  24. 24.193² =
  25. 25.444² =
  26. 26.691² =
  27. 27.377² =
  28. 28.7027² =
  29. 29.617² =
  30. 30.999² =
  31. 31.323² =
  32. 32.142² =
  33. 33.594² =
  34. 34.4627² =
  35. 35.127² =
  36. 36.819² =
  37. 37.504² =
  38. 38.495² =
  39. 39.934² =
  40. 40.410² =

Answer key

  1. 38539264
  2. 13456
  3. 10883401
  4. 32761
  5. 765625
  6. 624100
  7. 23707161
  8. 12321
  9. 430336
  10. 259081
  11. 150544
  12. 88698724
  13. 287296
  14. 12623809
  15. 559504
  16. 156025
  17. 227529
  18. 68890000
  19. 9180900
  20. 717409
  21. 45796
  22. 207936
  23. 389376
  24. 37249
  25. 197136
  26. 477481
  27. 142129
  28. 49378729
  29. 380689
  30. 998001
  31. 104329
  32. 20164
  33. 352836
  34. 21409129
  35. 16129
  36. 670761
  37. 254016
  38. 245025
  39. 872356
  40. 168100

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