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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 134 · 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. 1.4030² =
  2. 2.161² =
  3. 3.965² =
  4. 4.652² =
  5. 5.937² =
  6. 6.871² =
  7. 7.815² =
  8. 8.735² =
  9. 9.581² =
  10. 10.636² =
  11. 11.951² =
  12. 12.460² =
  13. 13.582² =
  14. 14.396² =
  15. 15.106² =
  16. 16.828² =
  17. 17.878² =
  18. 18.108² =
  19. 19.582² =
  20. 20.4452² =
  21. 21.7424² =
  22. 22.654² =
  23. 23.209² =
  24. 24.5151² =
  25. 25.2214² =
  26. 26.413² =
  27. 27.3150² =
  28. 28.847² =
  29. 29.625² =
  30. 30.684² =
  31. 31.772² =
  32. 32.2658² =
  33. 33.512² =
  34. 34.556² =
  35. 35.393² =
  36. 36.115² =
  37. 37.2832² =
  38. 38.765² =
  39. 39.5341² =
  40. 40.3810² =

Answer key

  1. 16240900
  2. 25921
  3. 931225
  4. 425104
  5. 877969
  6. 758641
  7. 664225
  8. 540225
  9. 337561
  10. 404496
  11. 904401
  12. 211600
  13. 338724
  14. 156816
  15. 11236
  16. 685584
  17. 770884
  18. 11664
  19. 338724
  20. 19820304
  21. 55115776
  22. 427716
  23. 43681
  24. 26532801
  25. 4901796
  26. 170569
  27. 9922500
  28. 717409
  29. 390625
  30. 467856
  31. 595984
  32. 7064964
  33. 262144
  34. 309136
  35. 154449
  36. 13225
  37. 8020224
  38. 585225
  39. 28526281
  40. 14516100

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