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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 688 · 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. 1.241² =
  2. 2.733² =
  3. 3.946² =
  4. 4.978² =
  5. 5.7903² =
  6. 6.1300² =
  7. 7.758² =
  8. 8.4680² =
  9. 9.705² =
  10. 10.427² =
  11. 11.864² =
  12. 12.2898² =
  13. 13.6753² =
  14. 14.8029² =
  15. 15.190² =
  16. 16.174² =
  17. 17.336² =
  18. 18.326² =
  19. 19.289² =
  20. 20.739² =
  21. 21.829² =
  22. 22.293² =
  23. 23.184² =
  24. 24.599² =
  25. 25.455² =
  26. 26.3350² =
  27. 27.342² =
  28. 28.330² =
  29. 29.392² =
  30. 30.395² =
  31. 31.710² =
  32. 32.4172² =
  33. 33.591² =
  34. 34.841² =
  35. 35.4350² =
  36. 36.326² =
  37. 37.838² =
  38. 38.161² =
  39. 39.7351² =
  40. 40.672² =

Answer key

  1. 58081
  2. 537289
  3. 894916
  4. 956484
  5. 62457409
  6. 1690000
  7. 574564
  8. 21902400
  9. 497025
  10. 182329
  11. 746496
  12. 8398404
  13. 45603009
  14. 64464841
  15. 36100
  16. 30276
  17. 112896
  18. 106276
  19. 83521
  20. 546121
  21. 687241
  22. 85849
  23. 33856
  24. 358801
  25. 207025
  26. 11222500
  27. 116964
  28. 108900
  29. 153664
  30. 156025
  31. 504100
  32. 17405584
  33. 349281
  34. 707281
  35. 18922500
  36. 106276
  37. 702244
  38. 25921
  39. 54037201
  40. 451584

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