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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 717 · 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. 1.158² =
  2. 2.993² =
  3. 3.3613² =
  4. 4.541² =
  5. 5.7711² =
  6. 6.906² =
  7. 7.749² =
  8. 8.614² =
  9. 9.272² =
  10. 10.878² =
  11. 11.807² =
  12. 12.980² =
  13. 13.826² =
  14. 14.177² =
  15. 15.1674² =
  16. 16.8153² =
  17. 17.656² =
  18. 18.4067² =
  19. 19.164² =
  20. 20.411² =
  21. 21.533² =
  22. 22.940² =
  23. 23.401² =
  24. 24.7468² =
  25. 25.388² =
  26. 26.202² =
  27. 27.622² =
  28. 28.823² =
  29. 29.879² =
  30. 30.127² =
  31. 31.469² =
  32. 32.188² =
  33. 33.194² =
  34. 34.919² =
  35. 35.397² =
  36. 36.127² =
  37. 37.9499² =
  38. 38.832² =
  39. 39.4951² =
  40. 40.4429² =

Answer key

  1. 24964
  2. 986049
  3. 13053769
  4. 292681
  5. 59459521
  6. 820836
  7. 561001
  8. 376996
  9. 73984
  10. 770884
  11. 651249
  12. 960400
  13. 682276
  14. 31329
  15. 2802276
  16. 66471409
  17. 430336
  18. 16540489
  19. 26896
  20. 168921
  21. 284089
  22. 883600
  23. 160801
  24. 55771024
  25. 150544
  26. 40804
  27. 386884
  28. 677329
  29. 772641
  30. 16129
  31. 219961
  32. 35344
  33. 37636
  34. 844561
  35. 157609
  36. 16129
  37. 90231001
  38. 692224
  39. 24512401
  40. 19616041

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