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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 542 · 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. 1.7353² =
  2. 2.980² =
  3. 3.309² =
  4. 4.805² =
  5. 5.705² =
  6. 6.652² =
  7. 7.8011² =
  8. 8.7965² =
  9. 9.255² =
  10. 10.890² =
  11. 11.563² =
  12. 12.7973² =
  13. 13.428² =
  14. 14.1296² =
  15. 15.8864² =
  16. 16.560² =
  17. 17.650² =
  18. 18.781² =
  19. 19.566² =
  20. 20.953² =
  21. 21.3748² =
  22. 22.8469² =
  23. 23.6994² =
  24. 24.995² =
  25. 25.932² =
  26. 26.5255² =
  27. 27.332² =
  28. 28.217² =
  29. 29.305² =
  30. 30.4761² =
  31. 31.3402² =
  32. 32.170² =
  33. 33.4029² =
  34. 34.656² =
  35. 35.156² =
  36. 36.833² =
  37. 37.249² =
  38. 38.237² =
  39. 39.928² =
  40. 40.1586² =

Answer key

  1. 54066609
  2. 960400
  3. 95481
  4. 648025
  5. 497025
  6. 425104
  7. 64176121
  8. 63441225
  9. 65025
  10. 792100
  11. 316969
  12. 63568729
  13. 183184
  14. 1679616
  15. 78570496
  16. 313600
  17. 422500
  18. 609961
  19. 320356
  20. 908209
  21. 14047504
  22. 71723961
  23. 48916036
  24. 990025
  25. 868624
  26. 27615025
  27. 110224
  28. 47089
  29. 93025
  30. 22667121
  31. 11573604
  32. 28900
  33. 16232841
  34. 430336
  35. 24336
  36. 693889
  37. 62001
  38. 56169
  39. 861184
  40. 2515396

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