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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 887 · 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. 1.709² =
  2. 2.902² =
  3. 3.424² =
  4. 4.582² =
  5. 5.333² =
  6. 6.921² =
  7. 7.818² =
  8. 8.4269² =
  9. 9.686² =
  10. 10.5060² =
  11. 11.1247² =
  12. 12.635² =
  13. 13.485² =
  14. 14.9107² =
  15. 15.521² =
  16. 16.620² =
  17. 17.724² =
  18. 18.156² =
  19. 19.563² =
  20. 20.3490² =
  21. 21.2554² =
  22. 22.934² =
  23. 23.947² =
  24. 24.427² =
  25. 25.5413² =
  26. 26.201² =
  27. 27.368² =
  28. 28.6903² =
  29. 29.462² =
  30. 30.727² =
  31. 31.231² =
  32. 32.8570² =
  33. 33.1045² =
  34. 34.776² =
  35. 35.652² =
  36. 36.233² =
  37. 37.318² =
  38. 38.2116² =
  39. 39.1932² =
  40. 40.8705² =

Answer key

  1. 502681
  2. 813604
  3. 179776
  4. 338724
  5. 110889
  6. 848241
  7. 669124
  8. 18224361
  9. 470596
  10. 25603600
  11. 1555009
  12. 403225
  13. 235225
  14. 82937449
  15. 271441
  16. 384400
  17. 524176
  18. 24336
  19. 316969
  20. 12180100
  21. 6522916
  22. 872356
  23. 896809
  24. 182329
  25. 29300569
  26. 40401
  27. 135424
  28. 47651409
  29. 213444
  30. 528529
  31. 53361
  32. 73444900
  33. 1092025
  34. 602176
  35. 425104
  36. 54289
  37. 101124
  38. 4477456
  39. 3732624
  40. 75777025

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