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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 884 · 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. 1.786² =
  2. 2.148² =
  3. 3.877² =
  4. 4.246² =
  5. 5.667² =
  6. 6.331² =
  7. 7.944² =
  8. 8.294² =
  9. 9.283² =
  10. 10.704² =
  11. 11.377² =
  12. 12.387² =
  13. 13.4019² =
  14. 14.104² =
  15. 15.9526² =
  16. 16.276² =
  17. 17.216² =
  18. 18.6779² =
  19. 19.8954² =
  20. 20.716² =
  21. 21.983² =
  22. 22.9292² =
  23. 23.371² =
  24. 24.976² =
  25. 25.269² =
  26. 26.562² =
  27. 27.2529² =
  28. 28.1282² =
  29. 29.248² =
  30. 30.3121² =
  31. 31.444² =
  32. 32.763² =
  33. 33.911² =
  34. 34.576² =
  35. 35.379² =
  36. 36.6141² =
  37. 37.599² =
  38. 38.219² =
  39. 39.9741² =
  40. 40.739² =

Answer key

  1. 617796
  2. 21904
  3. 769129
  4. 60516
  5. 444889
  6. 109561
  7. 891136
  8. 86436
  9. 80089
  10. 495616
  11. 142129
  12. 149769
  13. 16152361
  14. 10816
  15. 90744676
  16. 76176
  17. 46656
  18. 45954841
  19. 80174116
  20. 512656
  21. 966289
  22. 86341264
  23. 137641
  24. 952576
  25. 72361
  26. 315844
  27. 6395841
  28. 1643524
  29. 61504
  30. 9740641
  31. 197136
  32. 582169
  33. 829921
  34. 331776
  35. 143641
  36. 37711881
  37. 358801
  38. 47961
  39. 94887081
  40. 546121

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