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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 260 · 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. 1.500² =
  2. 2.933² =
  3. 3.474² =
  4. 4.585² =
  5. 5.701² =
  6. 6.307² =
  7. 7.486² =
  8. 8.231² =
  9. 9.117² =
  10. 10.3227² =
  11. 11.1145² =
  12. 12.1628² =
  13. 13.665² =
  14. 14.6699² =
  15. 15.628² =
  16. 16.1136² =
  17. 17.705² =
  18. 18.376² =
  19. 19.684² =
  20. 20.564² =
  21. 21.721² =
  22. 22.856² =
  23. 23.188² =
  24. 24.596² =
  25. 25.515² =
  26. 26.451² =
  27. 27.372² =
  28. 28.231² =
  29. 29.700² =
  30. 30.803² =
  31. 31.3301² =
  32. 32.2690² =
  33. 33.299² =
  34. 34.117² =
  35. 35.204² =
  36. 36.2648² =
  37. 37.684² =
  38. 38.493² =
  39. 39.721² =
  40. 40.238² =

Answer key

  1. 250000
  2. 870489
  3. 224676
  4. 342225
  5. 491401
  6. 94249
  7. 236196
  8. 53361
  9. 13689
  10. 10413529
  11. 1311025
  12. 2650384
  13. 442225
  14. 44876601
  15. 394384
  16. 1290496
  17. 497025
  18. 141376
  19. 467856
  20. 318096
  21. 519841
  22. 732736
  23. 35344
  24. 355216
  25. 265225
  26. 203401
  27. 138384
  28. 53361
  29. 490000
  30. 644809
  31. 10896601
  32. 7236100
  33. 89401
  34. 13689
  35. 41616
  36. 7011904
  37. 467856
  38. 243049
  39. 519841
  40. 56644

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