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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 913 · 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. 1.298² =
  2. 2.507² =
  3. 3.399² =
  4. 4.8416² =
  5. 5.382² =
  6. 6.392² =
  7. 7.342² =
  8. 8.715² =
  9. 9.2930² =
  10. 10.614² =
  11. 11.6696² =
  12. 12.226² =
  13. 13.773² =
  14. 14.338² =
  15. 15.1008² =
  16. 16.6351² =
  17. 17.9455² =
  18. 18.462² =
  19. 19.412² =
  20. 20.487² =
  21. 21.7841² =
  22. 22.863² =
  23. 23.144² =
  24. 24.2962² =
  25. 25.538² =
  26. 26.200² =
  27. 27.6771² =
  28. 28.165² =
  29. 29.2486² =
  30. 30.259² =
  31. 31.604² =
  32. 32.2685² =
  33. 33.377² =
  34. 34.132² =
  35. 35.363² =
  36. 36.882² =
  37. 37.790² =
  38. 38.315² =
  39. 39.854² =
  40. 40.159² =

Answer key

  1. 88804
  2. 257049
  3. 159201
  4. 70829056
  5. 145924
  6. 153664
  7. 116964
  8. 511225
  9. 8584900
  10. 376996
  11. 44836416
  12. 51076
  13. 597529
  14. 114244
  15. 1016064
  16. 40335201
  17. 89397025
  18. 213444
  19. 169744
  20. 237169
  21. 61481281
  22. 744769
  23. 20736
  24. 8773444
  25. 289444
  26. 40000
  27. 45846441
  28. 27225
  29. 6180196
  30. 67081
  31. 364816
  32. 7209225
  33. 142129
  34. 17424
  35. 131769
  36. 777924
  37. 624100
  38. 99225
  39. 729316
  40. 25281

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