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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 71 · 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. 1.152² =
  2. 2.712² =
  3. 3.2620² =
  4. 4.657² =
  5. 5.1569² =
  6. 6.319² =
  7. 7.690² =
  8. 8.415² =
  9. 9.324² =
  10. 10.335² =
  11. 11.577² =
  12. 12.4443² =
  13. 13.1086² =
  14. 14.7897² =
  15. 15.963² =
  16. 16.9891² =
  17. 17.914² =
  18. 18.670² =
  19. 19.655² =
  20. 20.833² =
  21. 21.2678² =
  22. 22.541² =
  23. 23.354² =
  24. 24.614² =
  25. 25.989² =
  26. 26.269² =
  27. 27.2986² =
  28. 28.7819² =
  29. 29.593² =
  30. 30.169² =
  31. 31.3031² =
  32. 32.156² =
  33. 33.6701² =
  34. 34.812² =
  35. 35.256² =
  36. 36.124² =
  37. 37.1302² =
  38. 38.137² =
  39. 39.472² =
  40. 40.855² =

Answer key

  1. 23104
  2. 506944
  3. 6864400
  4. 431649
  5. 2461761
  6. 101761
  7. 476100
  8. 172225
  9. 104976
  10. 112225
  11. 332929
  12. 19740249
  13. 1179396
  14. 62362609
  15. 927369
  16. 97831881
  17. 835396
  18. 448900
  19. 429025
  20. 693889
  21. 7171684
  22. 292681
  23. 125316
  24. 376996
  25. 978121
  26. 72361
  27. 8916196
  28. 61136761
  29. 351649
  30. 28561
  31. 9186961
  32. 24336
  33. 44903401
  34. 659344
  35. 65536
  36. 15376
  37. 1695204
  38. 18769
  39. 222784
  40. 731025

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