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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 539 · 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. 1.626² =
  2. 2.689² =
  3. 3.4389² =
  4. 4.524² =
  5. 5.777² =
  6. 6.838² =
  7. 7.250² =
  8. 8.301² =
  9. 9.644² =
  10. 10.804² =
  11. 11.207² =
  12. 12.1015² =
  13. 13.5338² =
  14. 14.2032² =
  15. 15.199² =
  16. 16.607² =
  17. 17.474² =
  18. 18.909² =
  19. 19.921² =
  20. 20.537² =
  21. 21.257² =
  22. 22.557² =
  23. 23.663² =
  24. 24.8271² =
  25. 25.773² =
  26. 26.969² =
  27. 27.862² =
  28. 28.744² =
  29. 29.668² =
  30. 30.192² =
  31. 31.558² =
  32. 32.206² =
  33. 33.167² =
  34. 34.607² =
  35. 35.932² =
  36. 36.4353² =
  37. 37.437² =
  38. 38.7074² =
  39. 39.247² =
  40. 40.3171² =

Answer key

  1. 391876
  2. 474721
  3. 19263321
  4. 274576
  5. 603729
  6. 702244
  7. 62500
  8. 90601
  9. 414736
  10. 646416
  11. 42849
  12. 1030225
  13. 28494244
  14. 4129024
  15. 39601
  16. 368449
  17. 224676
  18. 826281
  19. 848241
  20. 288369
  21. 66049
  22. 310249
  23. 439569
  24. 68409441
  25. 597529
  26. 938961
  27. 743044
  28. 553536
  29. 446224
  30. 36864
  31. 311364
  32. 42436
  33. 27889
  34. 368449
  35. 868624
  36. 18948609
  37. 190969
  38. 50041476
  39. 61009
  40. 10055241

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