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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 29 · 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. 1.122² =
  2. 2.893² =
  3. 3.913² =
  4. 4.255² =
  5. 5.581² =
  6. 6.681² =
  7. 7.398² =
  8. 8.661² =
  9. 9.5219² =
  10. 10.778² =
  11. 11.6663² =
  12. 12.1727² =
  13. 13.712² =
  14. 14.668² =
  15. 15.152² =
  16. 16.202² =
  17. 17.7976² =
  18. 18.808² =
  19. 19.863² =
  20. 20.9260² =
  21. 21.797² =
  22. 22.778² =
  23. 23.638² =
  24. 24.9239² =
  25. 25.873² =
  26. 26.102² =
  27. 27.541² =
  28. 28.442² =
  29. 29.5397² =
  30. 30.180² =
  31. 31.890² =
  32. 32.126² =
  33. 33.673² =
  34. 34.3596² =
  35. 35.542² =
  36. 36.381² =
  37. 37.550² =
  38. 38.1942² =
  39. 39.624² =
  40. 40.211² =

Answer key

  1. 14884
  2. 797449
  3. 833569
  4. 65025
  5. 337561
  6. 463761
  7. 158404
  8. 436921
  9. 27237961
  10. 605284
  11. 44395569
  12. 2982529
  13. 506944
  14. 446224
  15. 23104
  16. 40804
  17. 63616576
  18. 652864
  19. 744769
  20. 85747600
  21. 635209
  22. 605284
  23. 407044
  24. 85359121
  25. 762129
  26. 10404
  27. 292681
  28. 195364
  29. 29127609
  30. 32400
  31. 792100
  32. 15876
  33. 452929
  34. 12931216
  35. 293764
  36. 145161
  37. 302500
  38. 3771364
  39. 389376
  40. 44521

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