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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 917 · 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. 1.457² =
  2. 2.953² =
  3. 3.604² =
  4. 4.2825² =
  5. 5.7306² =
  6. 6.8924² =
  7. 7.719² =
  8. 8.823² =
  9. 9.8035² =
  10. 10.764² =
  11. 11.533² =
  12. 12.3316² =
  13. 13.5364² =
  14. 14.5346² =
  15. 15.277² =
  16. 16.722² =
  17. 17.3516² =
  18. 18.2642² =
  19. 19.563² =
  20. 20.190² =
  21. 21.870² =
  22. 22.725² =
  23. 23.345² =
  24. 24.758² =
  25. 25.569² =
  26. 26.272² =
  27. 27.8146² =
  28. 28.6220² =
  29. 29.974² =
  30. 30.226² =
  31. 31.8797² =
  32. 32.371² =
  33. 33.548² =
  34. 34.238² =
  35. 35.898² =
  36. 36.483² =
  37. 37.649² =
  38. 38.3943² =
  39. 39.271² =
  40. 40.572² =

Answer key

  1. 208849
  2. 908209
  3. 364816
  4. 7980625
  5. 53377636
  6. 79637776
  7. 516961
  8. 677329
  9. 64561225
  10. 583696
  11. 284089
  12. 10995856
  13. 28772496
  14. 28579716
  15. 76729
  16. 521284
  17. 12362256
  18. 6980164
  19. 316969
  20. 36100
  21. 756900
  22. 525625
  23. 119025
  24. 574564
  25. 323761
  26. 73984
  27. 66357316
  28. 38688400
  29. 948676
  30. 51076
  31. 77387209
  32. 137641
  33. 300304
  34. 56644
  35. 806404
  36. 233289
  37. 421201
  38. 15547249
  39. 73441
  40. 327184

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