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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 649 · 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. 1.3036² =
  2. 2.897² =
  3. 3.824² =
  4. 4.1763² =
  5. 5.562² =
  6. 6.823² =
  7. 7.597² =
  8. 8.1181² =
  9. 9.369² =
  10. 10.5928² =
  11. 11.4319² =
  12. 12.4641² =
  13. 13.478² =
  14. 14.531² =
  15. 15.501² =
  16. 16.875² =
  17. 17.788² =
  18. 18.382² =
  19. 19.308² =
  20. 20.673² =
  21. 21.295² =
  22. 22.489² =
  23. 23.350² =
  24. 24.741² =
  25. 25.309² =
  26. 26.7258² =
  27. 27.6701² =
  28. 28.807² =
  29. 29.355² =
  30. 30.9097² =
  31. 31.3839² =
  32. 32.9397² =
  33. 33.8392² =
  34. 34.876² =
  35. 35.517² =
  36. 36.884² =
  37. 37.458² =
  38. 38.382² =
  39. 39.436² =
  40. 40.9209² =

Answer key

  1. 9217296
  2. 804609
  3. 678976
  4. 3108169
  5. 315844
  6. 677329
  7. 356409
  8. 1394761
  9. 136161
  10. 35141184
  11. 18653761
  12. 21538881
  13. 228484
  14. 281961
  15. 251001
  16. 765625
  17. 620944
  18. 145924
  19. 94864
  20. 452929
  21. 87025
  22. 239121
  23. 122500
  24. 549081
  25. 95481
  26. 52678564
  27. 44903401
  28. 651249
  29. 126025
  30. 82755409
  31. 14737921
  32. 88303609
  33. 70425664
  34. 767376
  35. 267289
  36. 781456
  37. 209764
  38. 145924
  39. 190096
  40. 84805681

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