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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 769 · 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. 1.117² =
  2. 2.169² =
  3. 3.914² =
  4. 4.8774² =
  5. 5.704² =
  6. 6.7553² =
  7. 7.963² =
  8. 8.349² =
  9. 9.753² =
  10. 10.912² =
  11. 11.459² =
  12. 12.7412² =
  13. 13.927² =
  14. 14.316² =
  15. 15.370² =
  16. 16.380² =
  17. 17.546² =
  18. 18.9395² =
  19. 19.409² =
  20. 20.8424² =
  21. 21.420² =
  22. 22.176² =
  23. 23.281² =
  24. 24.2158² =
  25. 25.368² =
  26. 26.464² =
  27. 27.498² =
  28. 28.1492² =
  29. 29.627² =
  30. 30.7252² =
  31. 31.875² =
  32. 32.617² =
  33. 33.752² =
  34. 34.142² =
  35. 35.102² =
  36. 36.136² =
  37. 37.960² =
  38. 38.434² =
  39. 39.359² =
  40. 40.297² =

Answer key

  1. 13689
  2. 28561
  3. 835396
  4. 76983076
  5. 495616
  6. 57047809
  7. 927369
  8. 121801
  9. 567009
  10. 831744
  11. 210681
  12. 54937744
  13. 859329
  14. 99856
  15. 136900
  16. 144400
  17. 298116
  18. 88266025
  19. 167281
  20. 70963776
  21. 176400
  22. 30976
  23. 78961
  24. 4656964
  25. 135424
  26. 215296
  27. 248004
  28. 2226064
  29. 393129
  30. 52591504
  31. 765625
  32. 380689
  33. 565504
  34. 20164
  35. 10404
  36. 18496
  37. 921600
  38. 188356
  39. 128881
  40. 88209

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