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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 808 · 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. 1.562² =
  2. 2.722² =
  3. 3.228² =
  4. 4.7167² =
  5. 5.692² =
  6. 6.3534² =
  7. 7.5184² =
  8. 8.223² =
  9. 9.533² =
  10. 10.7164² =
  11. 11.210² =
  12. 12.1432² =
  13. 13.5393² =
  14. 14.6306² =
  15. 15.403² =
  16. 16.629² =
  17. 17.317² =
  18. 18.2446² =
  19. 19.6912² =
  20. 20.816² =
  21. 21.313² =
  22. 22.392² =
  23. 23.997² =
  24. 24.202² =
  25. 25.7334² =
  26. 26.406² =
  27. 27.535² =
  28. 28.647² =
  29. 29.104² =
  30. 30.1146² =
  31. 31.731² =
  32. 32.3910² =
  33. 33.2804² =
  34. 34.256² =
  35. 35.351² =
  36. 36.699² =
  37. 37.693² =
  38. 38.202² =
  39. 39.289² =
  40. 40.506² =

Answer key

  1. 315844
  2. 521284
  3. 51984
  4. 51365889
  5. 478864
  6. 12489156
  7. 26873856
  8. 49729
  9. 284089
  10. 51322896
  11. 44100
  12. 2050624
  13. 29084449
  14. 39765636
  15. 162409
  16. 395641
  17. 100489
  18. 5982916
  19. 47775744
  20. 665856
  21. 97969
  22. 153664
  23. 994009
  24. 40804
  25. 53787556
  26. 164836
  27. 286225
  28. 418609
  29. 10816
  30. 1313316
  31. 534361
  32. 15288100
  33. 7862416
  34. 65536
  35. 123201
  36. 488601
  37. 480249
  38. 40804
  39. 83521
  40. 256036

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