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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 119 · 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. 1.136² =
  2. 2.366² =
  3. 3.317² =
  4. 4.127² =
  5. 5.800² =
  6. 6.398² =
  7. 7.980² =
  8. 8.316² =
  9. 9.5285² =
  10. 10.4775² =
  11. 11.737² =
  12. 12.238² =
  13. 13.387² =
  14. 14.357² =
  15. 15.6509² =
  16. 16.5403² =
  17. 17.287² =
  18. 18.926² =
  19. 19.2055² =
  20. 20.400² =
  21. 21.649² =
  22. 22.2801² =
  23. 23.900² =
  24. 24.676² =
  25. 25.245² =
  26. 26.767² =
  27. 27.629² =
  28. 28.880² =
  29. 29.582² =
  30. 30.200² =
  31. 31.2419² =
  32. 32.782² =
  33. 33.584² =
  34. 34.676² =
  35. 35.386² =
  36. 36.902² =
  37. 37.422² =
  38. 38.861² =
  39. 39.259² =
  40. 40.153² =

Answer key

  1. 18496
  2. 133956
  3. 100489
  4. 16129
  5. 640000
  6. 158404
  7. 960400
  8. 99856
  9. 27931225
  10. 22800625
  11. 543169
  12. 56644
  13. 149769
  14. 127449
  15. 42367081
  16. 29192409
  17. 82369
  18. 857476
  19. 4223025
  20. 160000
  21. 421201
  22. 7845601
  23. 810000
  24. 456976
  25. 60025
  26. 588289
  27. 395641
  28. 774400
  29. 338724
  30. 40000
  31. 5851561
  32. 611524
  33. 341056
  34. 456976
  35. 148996
  36. 813604
  37. 178084
  38. 741321
  39. 67081
  40. 23409

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