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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 841 · 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. 1.3449² =
  2. 2.7157² =
  3. 3.477² =
  4. 4.776² =
  5. 5.7610² =
  6. 6.414² =
  7. 7.235² =
  8. 8.5535² =
  9. 9.938² =
  10. 10.578² =
  11. 11.500² =
  12. 12.216² =
  13. 13.222² =
  14. 14.7820² =
  15. 15.458² =
  16. 16.421² =
  17. 17.375² =
  18. 18.467² =
  19. 19.379² =
  20. 20.9666² =
  21. 21.9209² =
  22. 22.267² =
  23. 23.8013² =
  24. 24.1919² =
  25. 25.739² =
  26. 26.2998² =
  27. 27.881² =
  28. 28.1519² =
  29. 29.1290² =
  30. 30.459² =
  31. 31.107² =
  32. 32.3710² =
  33. 33.728² =
  34. 34.283² =
  35. 35.491² =
  36. 36.103² =
  37. 37.901² =
  38. 38.921² =
  39. 39.6566² =
  40. 40.7558² =

Answer key

  1. 11895601
  2. 51222649
  3. 227529
  4. 602176
  5. 57912100
  6. 171396
  7. 55225
  8. 30636225
  9. 879844
  10. 334084
  11. 250000
  12. 46656
  13. 49284
  14. 61152400
  15. 209764
  16. 177241
  17. 140625
  18. 218089
  19. 143641
  20. 93431556
  21. 84805681
  22. 71289
  23. 64208169
  24. 3682561
  25. 546121
  26. 8988004
  27. 776161
  28. 2307361
  29. 1664100
  30. 210681
  31. 11449
  32. 13764100
  33. 529984
  34. 80089
  35. 241081
  36. 10609
  37. 811801
  38. 848241
  39. 43112356
  40. 57123364

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