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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 137 · 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. 1.589² =
  2. 2.153² =
  3. 3.526² =
  4. 4.767² =
  5. 5.338² =
  6. 6.681² =
  7. 7.372² =
  8. 8.742² =
  9. 9.223² =
  10. 10.420² =
  11. 11.236² =
  12. 12.992² =
  13. 13.865² =
  14. 14.399² =
  15. 15.990² =
  16. 16.508² =
  17. 17.758² =
  18. 18.961² =
  19. 19.3232² =
  20. 20.375² =
  21. 21.848² =
  22. 22.580² =
  23. 23.834² =
  24. 24.4582² =
  25. 25.530² =
  26. 26.513² =
  27. 27.6506² =
  28. 28.694² =
  29. 29.356² =
  30. 30.950² =
  31. 31.8330² =
  32. 32.898² =
  33. 33.344² =
  34. 34.198² =
  35. 35.369² =
  36. 36.189² =
  37. 37.910² =
  38. 38.3070² =
  39. 39.4117² =
  40. 40.405² =

Answer key

  1. 346921
  2. 23409
  3. 276676
  4. 588289
  5. 114244
  6. 463761
  7. 138384
  8. 550564
  9. 49729
  10. 176400
  11. 55696
  12. 984064
  13. 748225
  14. 159201
  15. 980100
  16. 258064
  17. 574564
  18. 923521
  19. 10445824
  20. 140625
  21. 719104
  22. 336400
  23. 695556
  24. 20994724
  25. 280900
  26. 263169
  27. 42328036
  28. 481636
  29. 126736
  30. 902500
  31. 69388900
  32. 806404
  33. 118336
  34. 39204
  35. 136161
  36. 35721
  37. 828100
  38. 9424900
  39. 16949689
  40. 164025

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