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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 876 · 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. 1.198² =
  2. 2.560² =
  3. 3.264² =
  4. 4.920² =
  5. 5.240² =
  6. 6.1392² =
  7. 7.127² =
  8. 8.189² =
  9. 9.7377² =
  10. 10.821² =
  11. 11.388² =
  12. 12.358² =
  13. 13.938² =
  14. 14.951² =
  15. 15.145² =
  16. 16.282² =
  17. 17.870² =
  18. 18.371² =
  19. 19.7556² =
  20. 20.408² =
  21. 21.690² =
  22. 22.9364² =
  23. 23.113² =
  24. 24.2882² =
  25. 25.933² =
  26. 26.3540² =
  27. 27.7535² =
  28. 28.3134² =
  29. 29.942² =
  30. 30.5278² =
  31. 31.629² =
  32. 32.887² =
  33. 33.378² =
  34. 34.652² =
  35. 35.575² =
  36. 36.427² =
  37. 37.408² =
  38. 38.298² =
  39. 39.710² =
  40. 40.371² =

Answer key

  1. 39204
  2. 313600
  3. 69696
  4. 846400
  5. 57600
  6. 1937664
  7. 16129
  8. 35721
  9. 54420129
  10. 674041
  11. 150544
  12. 128164
  13. 879844
  14. 904401
  15. 21025
  16. 79524
  17. 756900
  18. 137641
  19. 57093136
  20. 166464
  21. 476100
  22. 87684496
  23. 12769
  24. 8305924
  25. 870489
  26. 12531600
  27. 56776225
  28. 9821956
  29. 887364
  30. 27857284
  31. 395641
  32. 786769
  33. 142884
  34. 425104
  35. 330625
  36. 182329
  37. 166464
  38. 88804
  39. 504100
  40. 137641

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