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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 90 · 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. 1.942² =
  2. 2.5298² =
  3. 3.733² =
  4. 4.3276² =
  5. 5.509² =
  6. 6.947² =
  7. 7.225² =
  8. 8.672² =
  9. 9.396² =
  10. 10.748² =
  11. 11.9892² =
  12. 12.682² =
  13. 13.5953² =
  14. 14.583² =
  15. 15.863² =
  16. 16.858² =
  17. 17.925² =
  18. 18.144² =
  19. 19.8980² =
  20. 20.209² =
  21. 21.911² =
  22. 22.742² =
  23. 23.851² =
  24. 24.662² =
  25. 25.473² =
  26. 26.3833² =
  27. 27.253² =
  28. 28.862² =
  29. 29.649² =
  30. 30.326² =
  31. 31.330² =
  32. 32.305² =
  33. 33.153² =
  34. 34.2630² =
  35. 35.103² =
  36. 36.183² =
  37. 37.895² =
  38. 38.680² =
  39. 39.835² =
  40. 40.1011² =

Answer key

  1. 887364
  2. 28068804
  3. 537289
  4. 10732176
  5. 259081
  6. 896809
  7. 50625
  8. 451584
  9. 156816
  10. 559504
  11. 97851664
  12. 465124
  13. 35438209
  14. 339889
  15. 744769
  16. 736164
  17. 855625
  18. 20736
  19. 80640400
  20. 43681
  21. 829921
  22. 550564
  23. 724201
  24. 438244
  25. 223729
  26. 14691889
  27. 64009
  28. 743044
  29. 421201
  30. 106276
  31. 108900
  32. 93025
  33. 23409
  34. 6916900
  35. 10609
  36. 33489
  37. 801025
  38. 462400
  39. 697225
  40. 1022121

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