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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 49 · 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. 1.738² =
  2. 2.6294² =
  3. 3.791² =
  4. 4.2130² =
  5. 5.4265² =
  6. 6.776² =
  7. 7.2402² =
  8. 8.8256² =
  9. 9.433² =
  10. 10.376² =
  11. 11.113² =
  12. 12.667² =
  13. 13.7677² =
  14. 14.586² =
  15. 15.906² =
  16. 16.578² =
  17. 17.233² =
  18. 18.660² =
  19. 19.4196² =
  20. 20.145² =
  21. 21.464² =
  22. 22.834² =
  23. 23.633² =
  24. 24.300² =
  25. 25.462² =
  26. 26.147² =
  27. 27.374² =
  28. 28.2491² =
  29. 29.4738² =
  30. 30.5465² =
  31. 31.543² =
  32. 32.468² =
  33. 33.470² =
  34. 34.502² =
  35. 35.6958² =
  36. 36.8306² =
  37. 37.392² =
  38. 38.1077² =
  39. 39.858² =
  40. 40.351² =

Answer key

  1. 544644
  2. 39614436
  3. 625681
  4. 4536900
  5. 18190225
  6. 602176
  7. 5769604
  8. 68161536
  9. 187489
  10. 141376
  11. 12769
  12. 444889
  13. 58936329
  14. 343396
  15. 820836
  16. 334084
  17. 54289
  18. 435600
  19. 17606416
  20. 21025
  21. 215296
  22. 695556
  23. 400689
  24. 90000
  25. 213444
  26. 21609
  27. 139876
  28. 6205081
  29. 22448644
  30. 29866225
  31. 294849
  32. 219024
  33. 220900
  34. 252004
  35. 48413764
  36. 68989636
  37. 153664
  38. 1159929
  39. 736164
  40. 123201

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