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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 493 · 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. 1.488² =
  2. 2.964² =
  3. 3.9368² =
  4. 4.3131² =
  5. 5.3541² =
  6. 6.916² =
  7. 7.282² =
  8. 8.260² =
  9. 9.335² =
  10. 10.571² =
  11. 11.201² =
  12. 12.3308² =
  13. 13.7370² =
  14. 14.392² =
  15. 15.305² =
  16. 16.765² =
  17. 17.9083² =
  18. 18.823² =
  19. 19.835² =
  20. 20.839² =
  21. 21.116² =
  22. 22.849² =
  23. 23.678² =
  24. 24.154² =
  25. 25.2669² =
  26. 26.271² =
  27. 27.272² =
  28. 28.750² =
  29. 29.114² =
  30. 30.769² =
  31. 31.353² =
  32. 32.301² =
  33. 33.525² =
  34. 34.962² =
  35. 35.969² =
  36. 36.975² =
  37. 37.138² =
  38. 38.817² =
  39. 39.991² =
  40. 40.6049² =

Answer key

  1. 238144
  2. 929296
  3. 87759424
  4. 9803161
  5. 12538681
  6. 839056
  7. 79524
  8. 67600
  9. 112225
  10. 326041
  11. 40401
  12. 10942864
  13. 54316900
  14. 153664
  15. 93025
  16. 585225
  17. 82500889
  18. 677329
  19. 697225
  20. 703921
  21. 13456
  22. 720801
  23. 459684
  24. 23716
  25. 7123561
  26. 73441
  27. 73984
  28. 562500
  29. 12996
  30. 591361
  31. 124609
  32. 90601
  33. 275625
  34. 925444
  35. 938961
  36. 950625
  37. 19044
  38. 667489
  39. 982081
  40. 36590401

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