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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 551 · 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. 1.357² =
  2. 2.492² =
  3. 3.282² =
  4. 4.556² =
  5. 5.748² =
  6. 6.7206² =
  7. 7.509² =
  8. 8.866² =
  9. 9.9724² =
  10. 10.696² =
  11. 11.1124² =
  12. 12.653² =
  13. 13.381² =
  14. 14.667² =
  15. 15.190² =
  16. 16.287² =
  17. 17.488² =
  18. 18.164² =
  19. 19.180² =
  20. 20.491² =
  21. 21.705² =
  22. 22.9357² =
  23. 23.561² =
  24. 24.8964² =
  25. 25.615² =
  26. 26.631² =
  27. 27.425² =
  28. 28.549² =
  29. 29.9853² =
  30. 30.251² =
  31. 31.284² =
  32. 32.221² =
  33. 33.6845² =
  34. 34.3953² =
  35. 35.664² =
  36. 36.402² =
  37. 37.510² =
  38. 38.225² =
  39. 39.7417² =
  40. 40.212² =

Answer key

  1. 127449
  2. 242064
  3. 79524
  4. 309136
  5. 559504
  6. 51926436
  7. 259081
  8. 749956
  9. 94556176
  10. 484416
  11. 1263376
  12. 426409
  13. 145161
  14. 444889
  15. 36100
  16. 82369
  17. 238144
  18. 26896
  19. 32400
  20. 241081
  21. 497025
  22. 87553449
  23. 314721
  24. 80353296
  25. 378225
  26. 398161
  27. 180625
  28. 301401
  29. 97081609
  30. 63001
  31. 80656
  32. 48841
  33. 46854025
  34. 15626209
  35. 440896
  36. 161604
  37. 260100
  38. 50625
  39. 55011889
  40. 44944

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