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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 923 · 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. 1.568² =
  2. 2.1534² =
  3. 3.358² =
  4. 4.263² =
  5. 5.357² =
  6. 6.9282² =
  7. 7.225² =
  8. 8.4600² =
  9. 9.375² =
  10. 10.6106² =
  11. 11.8903² =
  12. 12.2419² =
  13. 13.3374² =
  14. 14.900² =
  15. 15.815² =
  16. 16.893² =
  17. 17.649² =
  18. 18.806² =
  19. 19.8939² =
  20. 20.157² =
  21. 21.519² =
  22. 22.765² =
  23. 23.815² =
  24. 24.2833² =
  25. 25.7874² =
  26. 26.441² =
  27. 27.341² =
  28. 28.5878² =
  29. 29.310² =
  30. 30.353² =
  31. 31.314² =
  32. 32.430² =
  33. 33.889² =
  34. 34.309² =
  35. 35.955² =
  36. 36.8998² =
  37. 37.6961² =
  38. 38.493² =
  39. 39.1879² =
  40. 40.326² =

Answer key

  1. 322624
  2. 2353156
  3. 128164
  4. 69169
  5. 127449
  6. 86155524
  7. 50625
  8. 21160000
  9. 140625
  10. 37283236
  11. 79263409
  12. 5851561
  13. 11383876
  14. 810000
  15. 664225
  16. 797449
  17. 421201
  18. 649636
  19. 79905721
  20. 24649
  21. 269361
  22. 585225
  23. 664225
  24. 8025889
  25. 61999876
  26. 194481
  27. 116281
  28. 34550884
  29. 96100
  30. 124609
  31. 98596
  32. 184900
  33. 790321
  34. 95481
  35. 912025
  36. 80964004
  37. 48455521
  38. 243049
  39. 3530641
  40. 106276

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