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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 620 · 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. 1.2286² =
  2. 2.7651² =
  3. 3.980² =
  4. 4.825² =
  5. 5.4301² =
  6. 6.3668² =
  7. 7.5301² =
  8. 8.694² =
  9. 9.516² =
  10. 10.4673² =
  11. 11.5910² =
  12. 12.409² =
  13. 13.6247² =
  14. 14.6655² =
  15. 15.616² =
  16. 16.694² =
  17. 17.7190² =
  18. 18.566² =
  19. 19.250² =
  20. 20.954² =
  21. 21.3353² =
  22. 22.286² =
  23. 23.857² =
  24. 24.7763² =
  25. 25.742² =
  26. 26.915² =
  27. 27.5176² =
  28. 28.4705² =
  29. 29.419² =
  30. 30.937² =
  31. 31.3093² =
  32. 32.254² =
  33. 33.7312² =
  34. 34.506² =
  35. 35.200² =
  36. 36.148² =
  37. 37.844² =
  38. 38.508² =
  39. 39.2282² =
  40. 40.681² =

Answer key

  1. 5225796
  2. 58537801
  3. 960400
  4. 680625
  5. 18498601
  6. 13454224
  7. 28100601
  8. 481636
  9. 266256
  10. 21836929
  11. 34928100
  12. 167281
  13. 39025009
  14. 44289025
  15. 379456
  16. 481636
  17. 51696100
  18. 320356
  19. 62500
  20. 910116
  21. 11242609
  22. 81796
  23. 734449
  24. 60264169
  25. 550564
  26. 837225
  27. 26790976
  28. 22137025
  29. 175561
  30. 877969
  31. 9566649
  32. 64516
  33. 53465344
  34. 256036
  35. 40000
  36. 21904
  37. 712336
  38. 258064
  39. 5207524
  40. 463761

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