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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 758 · 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. 1.424² =
  2. 2.374² =
  3. 3.540² =
  4. 4.216² =
  5. 5.816² =
  6. 6.128² =
  7. 7.189² =
  8. 8.324² =
  9. 9.794² =
  10. 10.3470² =
  11. 11.181² =
  12. 12.5801² =
  13. 13.381² =
  14. 14.944² =
  15. 15.166² =
  16. 16.970² =
  17. 17.823² =
  18. 18.803² =
  19. 19.216² =
  20. 20.297² =
  21. 21.5543² =
  22. 22.173² =
  23. 23.7863² =
  24. 24.606² =
  25. 25.646² =
  26. 26.7918² =
  27. 27.6828² =
  28. 28.7927² =
  29. 29.5188² =
  30. 30.455² =
  31. 31.205² =
  32. 32.940² =
  33. 33.507² =
  34. 34.906² =
  35. 35.726² =
  36. 36.4417² =
  37. 37.1172² =
  38. 38.714² =
  39. 39.6874² =
  40. 40.256² =

Answer key

  1. 179776
  2. 139876
  3. 291600
  4. 46656
  5. 665856
  6. 16384
  7. 35721
  8. 104976
  9. 630436
  10. 12040900
  11. 32761
  12. 33651601
  13. 145161
  14. 891136
  15. 27556
  16. 940900
  17. 677329
  18. 644809
  19. 46656
  20. 88209
  21. 30724849
  22. 29929
  23. 61826769
  24. 367236
  25. 417316
  26. 62694724
  27. 46621584
  28. 62837329
  29. 26915344
  30. 207025
  31. 42025
  32. 883600
  33. 257049
  34. 820836
  35. 527076
  36. 19509889
  37. 1373584
  38. 509796
  39. 47251876
  40. 65536

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