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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 731 · 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. 1.674² =
  2. 2.4357² =
  3. 3.4404² =
  4. 4.683² =
  5. 5.191² =
  6. 6.772² =
  7. 7.569² =
  8. 8.286² =
  9. 9.294² =
  10. 10.997² =
  11. 11.5429² =
  12. 12.203² =
  13. 13.824² =
  14. 14.566² =
  15. 15.424² =
  16. 16.403² =
  17. 17.932² =
  18. 18.650² =
  19. 19.478² =
  20. 20.4108² =
  21. 21.500² =
  22. 22.500² =
  23. 23.126² =
  24. 24.245² =
  25. 25.768² =
  26. 26.913² =
  27. 27.534² =
  28. 28.8769² =
  29. 29.477² =
  30. 30.744² =
  31. 31.137² =
  32. 32.862² =
  33. 33.293² =
  34. 34.6953² =
  35. 35.3580² =
  36. 36.217² =
  37. 37.549² =
  38. 38.801² =
  39. 39.713² =
  40. 40.182² =

Answer key

  1. 454276
  2. 18983449
  3. 19395216
  4. 466489
  5. 36481
  6. 595984
  7. 323761
  8. 81796
  9. 86436
  10. 994009
  11. 29474041
  12. 41209
  13. 678976
  14. 320356
  15. 179776
  16. 162409
  17. 868624
  18. 422500
  19. 228484
  20. 16875664
  21. 250000
  22. 250000
  23. 15876
  24. 60025
  25. 589824
  26. 833569
  27. 285156
  28. 76895361
  29. 227529
  30. 553536
  31. 18769
  32. 743044
  33. 85849
  34. 48344209
  35. 12816400
  36. 47089
  37. 301401
  38. 641601
  39. 508369
  40. 33124

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