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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 610 · 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. 1.195² =
  2. 2.743² =
  3. 3.5101² =
  4. 4.640² =
  5. 5.773² =
  6. 6.202² =
  7. 7.614² =
  8. 8.661² =
  9. 9.485² =
  10. 10.123² =
  11. 11.6389² =
  12. 12.465² =
  13. 13.7811² =
  14. 14.805² =
  15. 15.104² =
  16. 16.470² =
  17. 17.997² =
  18. 18.512² =
  19. 19.597² =
  20. 20.573² =
  21. 21.357² =
  22. 22.830² =
  23. 23.2793² =
  24. 24.431² =
  25. 25.936² =
  26. 26.812² =
  27. 27.405² =
  28. 28.632² =
  29. 29.890² =
  30. 30.2486² =
  31. 31.103² =
  32. 32.815² =
  33. 33.387² =
  34. 34.717² =
  35. 35.5118² =
  36. 36.146² =
  37. 37.102² =
  38. 38.7239² =
  39. 39.682² =
  40. 40.160² =

Answer key

  1. 38025
  2. 552049
  3. 26020201
  4. 409600
  5. 597529
  6. 40804
  7. 376996
  8. 436921
  9. 235225
  10. 15129
  11. 40819321
  12. 216225
  13. 61011721
  14. 648025
  15. 10816
  16. 220900
  17. 994009
  18. 262144
  19. 356409
  20. 328329
  21. 127449
  22. 688900
  23. 7800849
  24. 185761
  25. 876096
  26. 659344
  27. 164025
  28. 399424
  29. 792100
  30. 6180196
  31. 10609
  32. 664225
  33. 149769
  34. 514089
  35. 26193924
  36. 21316
  37. 10404
  38. 52403121
  39. 465124
  40. 25600

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