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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 982 · 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. 1.2449² =
  2. 2.628² =
  3. 3.338² =
  4. 4.289² =
  5. 5.743² =
  6. 6.9144² =
  7. 7.196² =
  8. 8.112² =
  9. 9.526² =
  10. 10.213² =
  11. 11.1646² =
  12. 12.681² =
  13. 13.630² =
  14. 14.2854² =
  15. 15.744² =
  16. 16.801² =
  17. 17.169² =
  18. 18.485² =
  19. 19.4385² =
  20. 20.557² =
  21. 21.305² =
  22. 22.830² =
  23. 23.512² =
  24. 24.664² =
  25. 25.929² =
  26. 26.112² =
  27. 27.9641² =
  28. 28.745² =
  29. 29.307² =
  30. 30.924² =
  31. 31.195² =
  32. 32.6378² =
  33. 33.659² =
  34. 34.359² =
  35. 35.3199² =
  36. 36.575² =
  37. 37.212² =
  38. 38.602² =
  39. 39.707² =
  40. 40.864² =

Answer key

  1. 5997601
  2. 394384
  3. 114244
  4. 83521
  5. 552049
  6. 83612736
  7. 38416
  8. 12544
  9. 276676
  10. 45369
  11. 2709316
  12. 463761
  13. 396900
  14. 8145316
  15. 553536
  16. 641601
  17. 28561
  18. 235225
  19. 19228225
  20. 310249
  21. 93025
  22. 688900
  23. 262144
  24. 440896
  25. 863041
  26. 12544
  27. 92948881
  28. 555025
  29. 94249
  30. 853776
  31. 38025
  32. 40678884
  33. 434281
  34. 128881
  35. 10233601
  36. 330625
  37. 44944
  38. 362404
  39. 499849
  40. 746496

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