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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 663 · 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. 1.930² =
  2. 2.705² =
  3. 3.8943² =
  4. 4.615² =
  5. 5.937² =
  6. 6.805² =
  7. 7.838² =
  8. 8.391² =
  9. 9.903² =
  10. 10.232² =
  11. 11.532² =
  12. 12.159² =
  13. 13.118² =
  14. 14.621² =
  15. 15.6717² =
  16. 16.9282² =
  17. 17.239² =
  18. 18.119² =
  19. 19.5940² =
  20. 20.274² =
  21. 21.877² =
  22. 22.667² =
  23. 23.495² =
  24. 24.3416² =
  25. 25.874² =
  26. 26.686² =
  27. 27.706² =
  28. 28.195² =
  29. 29.981² =
  30. 30.114² =
  31. 31.244² =
  32. 32.353² =
  33. 33.294² =
  34. 34.8588² =
  35. 35.5972² =
  36. 36.194² =
  37. 37.306² =
  38. 38.631² =
  39. 39.341² =
  40. 40.960² =

Answer key

  1. 864900
  2. 497025
  3. 79977249
  4. 378225
  5. 877969
  6. 648025
  7. 702244
  8. 152881
  9. 815409
  10. 53824
  11. 283024
  12. 25281
  13. 13924
  14. 385641
  15. 45118089
  16. 86155524
  17. 57121
  18. 14161
  19. 35283600
  20. 75076
  21. 769129
  22. 444889
  23. 245025
  24. 11669056
  25. 763876
  26. 470596
  27. 498436
  28. 38025
  29. 962361
  30. 12996
  31. 59536
  32. 124609
  33. 86436
  34. 73753744
  35. 35664784
  36. 37636
  37. 93636
  38. 398161
  39. 116281
  40. 921600

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