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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 559 · 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. 1.1433² =
  2. 2.168² =
  3. 3.135² =
  4. 4.322² =
  5. 5.116² =
  6. 6.631² =
  7. 7.910² =
  8. 8.637² =
  9. 9.732² =
  10. 10.5149² =
  11. 11.2306² =
  12. 12.404² =
  13. 13.101² =
  14. 14.955² =
  15. 15.153² =
  16. 16.642² =
  17. 17.6867² =
  18. 18.352² =
  19. 19.3572² =
  20. 20.388² =
  21. 21.237² =
  22. 22.481² =
  23. 23.643² =
  24. 24.501² =
  25. 25.263² =
  26. 26.6194² =
  27. 27.929² =
  28. 28.411² =
  29. 29.898² =
  30. 30.927² =
  31. 31.599² =
  32. 32.352² =
  33. 33.296² =
  34. 34.9097² =
  35. 35.4960² =
  36. 36.208² =
  37. 37.785² =
  38. 38.301² =
  39. 39.878² =
  40. 40.530² =

Answer key

  1. 2053489
  2. 28224
  3. 18225
  4. 103684
  5. 13456
  6. 398161
  7. 828100
  8. 405769
  9. 535824
  10. 26512201
  11. 5317636
  12. 163216
  13. 10201
  14. 912025
  15. 23409
  16. 412164
  17. 47155689
  18. 123904
  19. 12759184
  20. 150544
  21. 56169
  22. 231361
  23. 413449
  24. 251001
  25. 69169
  26. 38365636
  27. 863041
  28. 168921
  29. 806404
  30. 859329
  31. 358801
  32. 123904
  33. 87616
  34. 82755409
  35. 24601600
  36. 43264
  37. 616225
  38. 90601
  39. 770884
  40. 280900

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