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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 297 · 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. 1.187² =
  2. 2.363² =
  3. 3.619² =
  4. 4.5589² =
  5. 5.741² =
  6. 6.9194² =
  7. 7.7918² =
  8. 8.2010² =
  9. 9.657² =
  10. 10.699² =
  11. 11.7895² =
  12. 12.533² =
  13. 13.696² =
  14. 14.469² =
  15. 15.413² =
  16. 16.580² =
  17. 17.1210² =
  18. 18.916² =
  19. 19.793² =
  20. 20.4955² =
  21. 21.341² =
  22. 22.227² =
  23. 23.510² =
  24. 24.469² =
  25. 25.724² =
  26. 26.7340² =
  27. 27.942² =
  28. 28.476² =
  29. 29.138² =
  30. 30.692² =
  31. 31.7586² =
  32. 32.1860² =
  33. 33.791² =
  34. 34.142² =
  35. 35.235² =
  36. 36.350² =
  37. 37.559² =
  38. 38.3201² =
  39. 39.576² =
  40. 40.241² =

Answer key

  1. 34969
  2. 131769
  3. 383161
  4. 31236921
  5. 549081
  6. 84529636
  7. 62694724
  8. 4040100
  9. 431649
  10. 488601
  11. 62331025
  12. 284089
  13. 484416
  14. 219961
  15. 170569
  16. 336400
  17. 1464100
  18. 839056
  19. 628849
  20. 24552025
  21. 116281
  22. 51529
  23. 260100
  24. 219961
  25. 524176
  26. 53875600
  27. 887364
  28. 226576
  29. 19044
  30. 478864
  31. 57547396
  32. 3459600
  33. 625681
  34. 20164
  35. 55225
  36. 122500
  37. 312481
  38. 10246401
  39. 331776
  40. 58081

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