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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 986 · 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. 1.725² =
  2. 2.753² =
  3. 3.145² =
  4. 4.160² =
  5. 5.692² =
  6. 6.112² =
  7. 7.924² =
  8. 8.751² =
  9. 9.6991² =
  10. 10.250² =
  11. 11.358² =
  12. 12.804² =
  13. 13.895² =
  14. 14.8321² =
  15. 15.1145² =
  16. 16.351² =
  17. 17.4952² =
  18. 18.436² =
  19. 19.167² =
  20. 20.652² =
  21. 21.9203² =
  22. 22.5616² =
  23. 23.315² =
  24. 24.364² =
  25. 25.5765² =
  26. 26.259² =
  27. 27.136² =
  28. 28.792² =
  29. 29.440² =
  30. 30.465² =
  31. 31.1693² =
  32. 32.912² =
  33. 33.486² =
  34. 34.460² =
  35. 35.9213² =
  36. 36.248² =
  37. 37.6054² =
  38. 38.516² =
  39. 39.7456² =
  40. 40.883² =

Answer key

  1. 525625
  2. 567009
  3. 21025
  4. 25600
  5. 478864
  6. 12544
  7. 853776
  8. 564001
  9. 48874081
  10. 62500
  11. 128164
  12. 646416
  13. 801025
  14. 69239041
  15. 1311025
  16. 123201
  17. 24522304
  18. 190096
  19. 27889
  20. 425104
  21. 84695209
  22. 31539456
  23. 99225
  24. 132496
  25. 33235225
  26. 67081
  27. 18496
  28. 627264
  29. 193600
  30. 216225
  31. 2866249
  32. 831744
  33. 236196
  34. 211600
  35. 84879369
  36. 61504
  37. 36650916
  38. 266256
  39. 55591936
  40. 779689

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