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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 464 · 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. 1.3817² =
  2. 2.680² =
  3. 3.206² =
  4. 4.375² =
  5. 5.347² =
  6. 6.5969² =
  7. 7.1852² =
  8. 8.437² =
  9. 9.652² =
  10. 10.7178² =
  11. 11.7410² =
  12. 12.566² =
  13. 13.908² =
  14. 14.356² =
  15. 15.5563² =
  16. 16.554² =
  17. 17.759² =
  18. 18.2145² =
  19. 19.677² =
  20. 20.743² =
  21. 21.511² =
  22. 22.4245² =
  23. 23.7496² =
  24. 24.243² =
  25. 25.473² =
  26. 26.487² =
  27. 27.597² =
  28. 28.2215² =
  29. 29.8017² =
  30. 30.293² =
  31. 31.833² =
  32. 32.697² =
  33. 33.783² =
  34. 34.7135² =
  35. 35.382² =
  36. 36.254² =
  37. 37.116² =
  38. 38.6899² =
  39. 39.212² =
  40. 40.6641² =

Answer key

  1. 14569489
  2. 462400
  3. 42436
  4. 140625
  5. 120409
  6. 35628961
  7. 3429904
  8. 190969
  9. 425104
  10. 51523684
  11. 54908100
  12. 320356
  13. 824464
  14. 126736
  15. 30946969
  16. 306916
  17. 576081
  18. 4601025
  19. 458329
  20. 552049
  21. 261121
  22. 18020025
  23. 56190016
  24. 59049
  25. 223729
  26. 237169
  27. 356409
  28. 4906225
  29. 64272289
  30. 85849
  31. 693889
  32. 485809
  33. 613089
  34. 50908225
  35. 145924
  36. 64516
  37. 13456
  38. 47596201
  39. 44944
  40. 44102881

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