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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 498 · 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. 1.283² =
  2. 2.315² =
  3. 3.568² =
  4. 4.156² =
  5. 5.326² =
  6. 6.3337² =
  7. 7.568² =
  8. 8.9856² =
  9. 9.7603² =
  10. 10.6101² =
  11. 11.295² =
  12. 12.106² =
  13. 13.431² =
  14. 14.494² =
  15. 15.889² =
  16. 16.567² =
  17. 17.820² =
  18. 18.263² =
  19. 19.1587² =
  20. 20.973² =
  21. 21.4112² =
  22. 22.1011² =
  23. 23.2665² =
  24. 24.579² =
  25. 25.532² =
  26. 26.605² =
  27. 27.247² =
  28. 28.8017² =
  29. 29.533² =
  30. 30.567² =
  31. 31.176² =
  32. 32.220² =
  33. 33.206² =
  34. 34.206² =
  35. 35.900² =
  36. 36.211² =
  37. 37.998² =
  38. 38.269² =
  39. 39.968² =
  40. 40.196² =

Answer key

  1. 80089
  2. 99225
  3. 322624
  4. 24336
  5. 106276
  6. 11135569
  7. 322624
  8. 97140736
  9. 57805609
  10. 37222201
  11. 87025
  12. 11236
  13. 185761
  14. 244036
  15. 790321
  16. 321489
  17. 672400
  18. 69169
  19. 2518569
  20. 946729
  21. 16908544
  22. 1022121
  23. 7102225
  24. 335241
  25. 283024
  26. 366025
  27. 61009
  28. 64272289
  29. 284089
  30. 321489
  31. 30976
  32. 48400
  33. 42436
  34. 42436
  35. 810000
  36. 44521
  37. 996004
  38. 72361
  39. 937024
  40. 38416

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