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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 373 · 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. 1.826² =
  2. 2.149² =
  3. 3.878² =
  4. 4.6751² =
  5. 5.253² =
  6. 6.3815² =
  7. 7.656² =
  8. 8.832² =
  9. 9.992² =
  10. 10.743² =
  11. 11.5836² =
  12. 12.268² =
  13. 13.125² =
  14. 14.298² =
  15. 15.384² =
  16. 16.744² =
  17. 17.273² =
  18. 18.735² =
  19. 19.741² =
  20. 20.819² =
  21. 21.136² =
  22. 22.182² =
  23. 23.775² =
  24. 24.787² =
  25. 25.839² =
  26. 26.6315² =
  27. 27.360² =
  28. 28.3889² =
  29. 29.2890² =
  30. 30.3723² =
  31. 31.352² =
  32. 32.7181² =
  33. 33.9626² =
  34. 34.329² =
  35. 35.3300² =
  36. 36.714² =
  37. 37.6348² =
  38. 38.195² =
  39. 39.2120² =
  40. 40.7971² =

Answer key

  1. 682276
  2. 22201
  3. 770884
  4. 45576001
  5. 64009
  6. 14554225
  7. 430336
  8. 692224
  9. 984064
  10. 552049
  11. 34058896
  12. 71824
  13. 15625
  14. 88804
  15. 147456
  16. 553536
  17. 74529
  18. 540225
  19. 549081
  20. 670761
  21. 18496
  22. 33124
  23. 600625
  24. 619369
  25. 703921
  26. 39879225
  27. 129600
  28. 15124321
  29. 8352100
  30. 13860729
  31. 123904
  32. 51566761
  33. 92659876
  34. 108241
  35. 10890000
  36. 509796
  37. 40297104
  38. 38025
  39. 4494400
  40. 63536841

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