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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 898 · 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. 1.917² =
  2. 2.8182² =
  3. 3.491² =
  4. 4.6304² =
  5. 5.6040² =
  6. 6.2401² =
  7. 7.706² =
  8. 8.616² =
  9. 9.3368² =
  10. 10.924² =
  11. 11.961² =
  12. 12.4357² =
  13. 13.7541² =
  14. 14.650² =
  15. 15.833² =
  16. 16.535² =
  17. 17.944² =
  18. 18.3231² =
  19. 19.680² =
  20. 20.4507² =
  21. 21.943² =
  22. 22.565² =
  23. 23.289² =
  24. 24.123² =
  25. 25.194² =
  26. 26.8896² =
  27. 27.884² =
  28. 28.4551² =
  29. 29.5063² =
  30. 30.195² =
  31. 31.598² =
  32. 32.116² =
  33. 33.995² =
  34. 34.681² =
  35. 35.6691² =
  36. 36.449² =
  37. 37.447² =
  38. 38.285² =
  39. 39.7825² =
  40. 40.503² =

Answer key

  1. 840889
  2. 66945124
  3. 241081
  4. 39740416
  5. 36481600
  6. 5764801
  7. 498436
  8. 379456
  9. 11343424
  10. 853776
  11. 923521
  12. 18983449
  13. 56866681
  14. 422500
  15. 693889
  16. 286225
  17. 891136
  18. 10439361
  19. 462400
  20. 20313049
  21. 889249
  22. 319225
  23. 83521
  24. 15129
  25. 37636
  26. 79138816
  27. 781456
  28. 20711601
  29. 25633969
  30. 38025
  31. 357604
  32. 13456
  33. 990025
  34. 463761
  35. 44769481
  36. 201601
  37. 199809
  38. 81225
  39. 61230625
  40. 253009

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