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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 858 · 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. 1.8186² =
  2. 2.923² =
  3. 3.723² =
  4. 4.649² =
  5. 5.348² =
  6. 6.642² =
  7. 7.5205² =
  8. 8.998² =
  9. 9.976² =
  10. 10.3304² =
  11. 11.781² =
  12. 12.343² =
  13. 13.201² =
  14. 14.742² =
  15. 15.6388² =
  16. 16.7430² =
  17. 17.386² =
  18. 18.814² =
  19. 19.5526² =
  20. 20.573² =
  21. 21.705² =
  22. 22.351² =
  23. 23.877² =
  24. 24.5894² =
  25. 25.6322² =
  26. 26.271² =
  27. 27.577² =
  28. 28.245² =
  29. 29.954² =
  30. 30.346² =
  31. 31.344² =
  32. 32.1999² =
  33. 33.229² =
  34. 34.279² =
  35. 35.773² =
  36. 36.555² =
  37. 37.6096² =
  38. 38.448² =
  39. 39.121² =
  40. 40.766² =

Answer key

  1. 67010596
  2. 851929
  3. 522729
  4. 421201
  5. 121104
  6. 412164
  7. 27092025
  8. 996004
  9. 952576
  10. 10916416
  11. 609961
  12. 117649
  13. 40401
  14. 550564
  15. 40806544
  16. 55204900
  17. 148996
  18. 662596
  19. 30536676
  20. 328329
  21. 497025
  22. 123201
  23. 769129
  24. 34739236
  25. 39967684
  26. 73441
  27. 332929
  28. 60025
  29. 910116
  30. 119716
  31. 118336
  32. 3996001
  33. 52441
  34. 77841
  35. 597529
  36. 308025
  37. 37161216
  38. 200704
  39. 14641
  40. 586756

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