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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 427 · 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. 1.773² =
  2. 2.752² =
  3. 3.302² =
  4. 4.2396² =
  5. 5.789² =
  6. 6.246² =
  7. 7.315² =
  8. 8.8374² =
  9. 9.9107² =
  10. 10.138² =
  11. 11.785² =
  12. 12.2004² =
  13. 13.3584² =
  14. 14.4371² =
  15. 15.753² =
  16. 16.166² =
  17. 17.8740² =
  18. 18.811² =
  19. 19.271² =
  20. 20.343² =
  21. 21.8454² =
  22. 22.984² =
  23. 23.197² =
  24. 24.3616² =
  25. 25.294² =
  26. 26.854² =
  27. 27.450² =
  28. 28.388² =
  29. 29.768² =
  30. 30.709² =
  31. 31.543² =
  32. 32.669² =
  33. 33.7865² =
  34. 34.396² =
  35. 35.281² =
  36. 36.3100² =
  37. 37.531² =
  38. 38.104² =
  39. 39.1889² =
  40. 40.7572² =

Answer key

  1. 597529
  2. 565504
  3. 91204
  4. 5740816
  5. 622521
  6. 60516
  7. 99225
  8. 70123876
  9. 82937449
  10. 19044
  11. 616225
  12. 4016016
  13. 12845056
  14. 19105641
  15. 567009
  16. 27556
  17. 76387600
  18. 657721
  19. 73441
  20. 117649
  21. 71470116
  22. 968256
  23. 38809
  24. 13075456
  25. 86436
  26. 729316
  27. 202500
  28. 150544
  29. 589824
  30. 502681
  31. 294849
  32. 447561
  33. 61858225
  34. 156816
  35. 78961
  36. 9610000
  37. 281961
  38. 10816
  39. 3568321
  40. 57335184

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