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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 718 · 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. 1.882² =
  2. 2.224² =
  3. 3.645² =
  4. 4.944² =
  5. 5.877² =
  6. 6.159² =
  7. 7.9003² =
  8. 8.140² =
  9. 9.7742² =
  10. 10.305² =
  11. 11.7645² =
  12. 12.600² =
  13. 13.6247² =
  14. 14.3770² =
  15. 15.545² =
  16. 16.338² =
  17. 17.844² =
  18. 18.174² =
  19. 19.2942² =
  20. 20.486² =
  21. 21.725² =
  22. 22.780² =
  23. 23.481² =
  24. 24.586² =
  25. 25.667² =
  26. 26.1388² =
  27. 27.5290² =
  28. 28.884² =
  29. 29.9024² =
  30. 30.4792² =
  31. 31.914² =
  32. 32.871² =
  33. 33.5215² =
  34. 34.209² =
  35. 35.499² =
  36. 36.708² =
  37. 37.910² =
  38. 38.313² =
  39. 39.482² =
  40. 40.601² =

Answer key

  1. 777924
  2. 50176
  3. 416025
  4. 891136
  5. 769129
  6. 25281
  7. 81054009
  8. 19600
  9. 59938564
  10. 93025
  11. 58446025
  12. 360000
  13. 39025009
  14. 14212900
  15. 297025
  16. 114244
  17. 712336
  18. 30276
  19. 8655364
  20. 236196
  21. 525625
  22. 608400
  23. 231361
  24. 343396
  25. 444889
  26. 1926544
  27. 27984100
  28. 781456
  29. 81432576
  30. 22963264
  31. 835396
  32. 758641
  33. 27196225
  34. 43681
  35. 249001
  36. 501264
  37. 828100
  38. 97969
  39. 232324
  40. 361201

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