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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 715 · 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. 1.5241² =
  2. 2.513² =
  3. 3.997² =
  4. 4.6787² =
  5. 5.6066² =
  6. 6.966² =
  7. 7.554² =
  8. 8.8767² =
  9. 9.283² =
  10. 10.8929² =
  11. 11.5007² =
  12. 12.4792² =
  13. 13.711² =
  14. 14.600² =
  15. 15.196² =
  16. 16.9638² =
  17. 17.8171² =
  18. 18.132² =
  19. 19.222² =
  20. 20.5777² =
  21. 21.661² =
  22. 22.403² =
  23. 23.4096² =
  24. 24.375² =
  25. 25.134² =
  26. 26.4865² =
  27. 27.329² =
  28. 28.7161² =
  29. 29.804² =
  30. 30.725² =
  31. 31.8684² =
  32. 32.186² =
  33. 33.216² =
  34. 34.224² =
  35. 35.4742² =
  36. 36.574² =
  37. 37.568² =
  38. 38.756² =
  39. 39.3605² =
  40. 40.258² =

Answer key

  1. 27468081
  2. 263169
  3. 994009
  4. 46063369
  5. 36796356
  6. 933156
  7. 306916
  8. 76860289
  9. 80089
  10. 79727041
  11. 25070049
  12. 22963264
  13. 505521
  14. 360000
  15. 38416
  16. 92891044
  17. 66765241
  18. 17424
  19. 49284
  20. 33373729
  21. 436921
  22. 162409
  23. 16777216
  24. 140625
  25. 17956
  26. 23668225
  27. 108241
  28. 51279921
  29. 646416
  30. 525625
  31. 75411856
  32. 34596
  33. 46656
  34. 50176
  35. 22486564
  36. 329476
  37. 322624
  38. 571536
  39. 12996025
  40. 66564

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