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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 65 · 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. 1.884² =
  2. 2.213² =
  3. 3.2666² =
  4. 4.219² =
  5. 5.118² =
  6. 6.977² =
  7. 7.627² =
  8. 8.9339² =
  9. 9.204² =
  10. 10.922² =
  11. 11.583² =
  12. 12.9054² =
  13. 13.7113² =
  14. 14.242² =
  15. 15.629² =
  16. 16.2656² =
  17. 17.1106² =
  18. 18.519² =
  19. 19.275² =
  20. 20.7805² =
  21. 21.8218² =
  22. 22.894² =
  23. 23.9472² =
  24. 24.6464² =
  25. 25.525² =
  26. 26.225² =
  27. 27.9442² =
  28. 28.212² =
  29. 29.839² =
  30. 30.1313² =
  31. 31.6431² =
  32. 32.520² =
  33. 33.662² =
  34. 34.335² =
  35. 35.653² =
  36. 36.465² =
  37. 37.1057² =
  38. 38.642² =
  39. 39.9099² =
  40. 40.626² =

Answer key

  1. 781456
  2. 45369
  3. 7107556
  4. 47961
  5. 13924
  6. 954529
  7. 393129
  8. 87216921
  9. 41616
  10. 850084
  11. 339889
  12. 81974916
  13. 50594769
  14. 58564
  15. 395641
  16. 7054336
  17. 1223236
  18. 269361
  19. 75625
  20. 60918025
  21. 67535524
  22. 799236
  23. 89718784
  24. 41783296
  25. 275625
  26. 50625
  27. 89151364
  28. 44944
  29. 703921
  30. 1723969
  31. 41357761
  32. 270400
  33. 438244
  34. 112225
  35. 426409
  36. 216225
  37. 1117249
  38. 412164
  39. 82791801
  40. 391876

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