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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 627 · 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. 1.9393² =
  2. 2.441² =
  3. 3.593² =
  4. 4.804² =
  5. 5.784² =
  6. 6.942² =
  7. 7.3889² =
  8. 8.4514² =
  9. 9.489² =
  10. 10.579² =
  11. 11.286² =
  12. 12.591² =
  13. 13.453² =
  14. 14.624² =
  15. 15.8009² =
  16. 16.294² =
  17. 17.805² =
  18. 18.735² =
  19. 19.800² =
  20. 20.1008² =
  21. 21.282² =
  22. 22.1888² =
  23. 23.741² =
  24. 24.123² =
  25. 25.743² =
  26. 26.244² =
  27. 27.1805² =
  28. 28.490² =
  29. 29.713² =
  30. 30.714² =
  31. 31.688² =
  32. 32.299² =
  33. 33.2561² =
  34. 34.574² =
  35. 35.5112² =
  36. 36.476² =
  37. 37.767² =
  38. 38.981² =
  39. 39.2630² =
  40. 40.710² =

Answer key

  1. 88228449
  2. 194481
  3. 351649
  4. 646416
  5. 614656
  6. 887364
  7. 15124321
  8. 20376196
  9. 239121
  10. 335241
  11. 81796
  12. 349281
  13. 205209
  14. 389376
  15. 64144081
  16. 86436
  17. 648025
  18. 540225
  19. 640000
  20. 1016064
  21. 79524
  22. 3564544
  23. 549081
  24. 15129
  25. 552049
  26. 59536
  27. 3258025
  28. 240100
  29. 508369
  30. 509796
  31. 473344
  32. 89401
  33. 6558721
  34. 329476
  35. 26132544
  36. 226576
  37. 588289
  38. 962361
  39. 6916900
  40. 504100

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