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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 992 · 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. 1.173² =
  2. 2.316² =
  3. 3.489² =
  4. 4.844² =
  5. 5.591² =
  6. 6.673² =
  7. 7.262² =
  8. 8.8051² =
  9. 9.918² =
  10. 10.402² =
  11. 11.563² =
  12. 12.315² =
  13. 13.136² =
  14. 14.321² =
  15. 15.699² =
  16. 16.783² =
  17. 17.942² =
  18. 18.188² =
  19. 19.247² =
  20. 20.169² =
  21. 21.699² =
  22. 22.9765² =
  23. 23.1348² =
  24. 24.489² =
  25. 25.3245² =
  26. 26.514² =
  27. 27.8387² =
  28. 28.262² =
  29. 29.470² =
  30. 30.930² =
  31. 31.6831² =
  32. 32.838² =
  33. 33.4881² =
  34. 34.175² =
  35. 35.245² =
  36. 36.789² =
  37. 37.450² =
  38. 38.761² =
  39. 39.271² =
  40. 40.7222² =

Answer key

  1. 29929
  2. 99856
  3. 239121
  4. 712336
  5. 349281
  6. 452929
  7. 68644
  8. 64818601
  9. 842724
  10. 161604
  11. 316969
  12. 99225
  13. 18496
  14. 103041
  15. 488601
  16. 613089
  17. 887364
  18. 35344
  19. 61009
  20. 28561
  21. 488601
  22. 95355225
  23. 1817104
  24. 239121
  25. 10530025
  26. 264196
  27. 70341769
  28. 68644
  29. 220900
  30. 864900
  31. 46662561
  32. 702244
  33. 23824161
  34. 30625
  35. 60025
  36. 622521
  37. 202500
  38. 579121
  39. 73441
  40. 52157284

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