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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 468 · 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. 1.489² =
  2. 2.240² =
  3. 3.8906² =
  4. 4.280² =
  5. 5.9189² =
  6. 6.770² =
  7. 7.4783² =
  8. 8.7548² =
  9. 9.2661² =
  10. 10.458² =
  11. 11.6711² =
  12. 12.642² =
  13. 13.842² =
  14. 14.419² =
  15. 15.376² =
  16. 16.169² =
  17. 17.3437² =
  18. 18.6551² =
  19. 19.880² =
  20. 20.704² =
  21. 21.774² =
  22. 22.717² =
  23. 23.8189² =
  24. 24.755² =
  25. 25.8075² =
  26. 26.101² =
  27. 27.754² =
  28. 28.497² =
  29. 29.276² =
  30. 30.704² =
  31. 31.638² =
  32. 32.729² =
  33. 33.353² =
  34. 34.925² =
  35. 35.449² =
  36. 36.336² =
  37. 37.977² =
  38. 38.4867² =
  39. 39.228² =
  40. 40.2147² =

Answer key

  1. 239121
  2. 57600
  3. 79316836
  4. 78400
  5. 84437721
  6. 592900
  7. 22877089
  8. 56972304
  9. 7080921
  10. 209764
  11. 45037521
  12. 412164
  13. 708964
  14. 175561
  15. 141376
  16. 28561
  17. 11812969
  18. 42915601
  19. 774400
  20. 495616
  21. 599076
  22. 514089
  23. 67059721
  24. 570025
  25. 65205625
  26. 10201
  27. 568516
  28. 247009
  29. 76176
  30. 495616
  31. 407044
  32. 531441
  33. 124609
  34. 855625
  35. 201601
  36. 112896
  37. 954529
  38. 23687689
  39. 51984
  40. 4609609

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