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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 939 · 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. 1.479² =
  2. 2.901² =
  3. 3.405² =
  4. 4.582² =
  5. 5.689² =
  6. 6.236² =
  7. 7.3175² =
  8. 8.251² =
  9. 9.136² =
  10. 10.2452² =
  11. 11.1403² =
  12. 12.6529² =
  13. 13.584² =
  14. 14.245² =
  15. 15.506² =
  16. 16.636² =
  17. 17.389² =
  18. 18.7302² =
  19. 19.8896² =
  20. 20.4154² =
  21. 21.130² =
  22. 22.422² =
  23. 23.4981² =
  24. 24.4077² =
  25. 25.558² =
  26. 26.198² =
  27. 27.4298² =
  28. 28.305² =
  29. 29.695² =
  30. 30.223² =
  31. 31.2954² =
  32. 32.764² =
  33. 33.1552² =
  34. 34.782² =
  35. 35.431² =
  36. 36.147² =
  37. 37.120² =
  38. 38.139² =
  39. 39.462² =
  40. 40.661² =

Answer key

  1. 229441
  2. 811801
  3. 164025
  4. 338724
  5. 474721
  6. 55696
  7. 10080625
  8. 63001
  9. 18496
  10. 6012304
  11. 1968409
  12. 42627841
  13. 341056
  14. 60025
  15. 256036
  16. 404496
  17. 151321
  18. 53319204
  19. 79138816
  20. 17255716
  21. 16900
  22. 178084
  23. 24810361
  24. 16621929
  25. 311364
  26. 39204
  27. 18472804
  28. 93025
  29. 483025
  30. 49729
  31. 8726116
  32. 583696
  33. 2408704
  34. 611524
  35. 185761
  36. 21609
  37. 14400
  38. 19321
  39. 213444
  40. 436921

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