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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 666 · 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. 1.9722² =
  2. 2.860² =
  3. 3.370² =
  4. 4.931² =
  5. 5.957² =
  6. 6.787² =
  7. 7.1008² =
  8. 8.7175² =
  9. 9.144² =
  10. 10.770² =
  11. 11.563² =
  12. 12.605² =
  13. 13.867² =
  14. 14.145² =
  15. 15.5291² =
  16. 16.868² =
  17. 17.716² =
  18. 18.610² =
  19. 19.823² =
  20. 20.907² =
  21. 21.146² =
  22. 22.3003² =
  23. 23.295² =
  24. 24.904² =
  25. 25.2010² =
  26. 26.492² =
  27. 27.528² =
  28. 28.813² =
  29. 29.9710² =
  30. 30.229² =
  31. 31.8920² =
  32. 32.465² =
  33. 33.115² =
  34. 34.506² =
  35. 35.769² =
  36. 36.449² =
  37. 37.646² =
  38. 38.362² =
  39. 39.8657² =
  40. 40.748² =

Answer key

  1. 94517284
  2. 739600
  3. 136900
  4. 866761
  5. 915849
  6. 619369
  7. 1016064
  8. 51480625
  9. 20736
  10. 592900
  11. 316969
  12. 366025
  13. 751689
  14. 21025
  15. 27994681
  16. 753424
  17. 512656
  18. 372100
  19. 677329
  20. 822649
  21. 21316
  22. 9018009
  23. 87025
  24. 817216
  25. 4040100
  26. 242064
  27. 278784
  28. 660969
  29. 94284100
  30. 52441
  31. 79566400
  32. 216225
  33. 13225
  34. 256036
  35. 591361
  36. 201601
  37. 417316
  38. 131044
  39. 74943649
  40. 559504

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