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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 938 · 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. 1.689² =
  2. 2.654² =
  3. 3.797² =
  4. 4.878² =
  5. 5.144² =
  6. 6.9947² =
  7. 7.5057² =
  8. 8.331² =
  9. 9.442² =
  10. 10.3502² =
  11. 11.377² =
  12. 12.806² =
  13. 13.803² =
  14. 14.619² =
  15. 15.423² =
  16. 16.291² =
  17. 17.766² =
  18. 18.192² =
  19. 19.158² =
  20. 20.800² =
  21. 21.406² =
  22. 22.752² =
  23. 23.500² =
  24. 24.417² =
  25. 25.153² =
  26. 26.203² =
  27. 27.712² =
  28. 28.715² =
  29. 29.998² =
  30. 30.6062² =
  31. 31.5891² =
  32. 32.224² =
  33. 33.606² =
  34. 34.110² =
  35. 35.790² =
  36. 36.7747² =
  37. 37.503² =
  38. 38.233² =
  39. 39.551² =
  40. 40.104² =

Answer key

  1. 474721
  2. 427716
  3. 635209
  4. 770884
  5. 20736
  6. 98942809
  7. 25573249
  8. 109561
  9. 195364
  10. 12264004
  11. 142129
  12. 649636
  13. 644809
  14. 383161
  15. 178929
  16. 84681
  17. 586756
  18. 36864
  19. 24964
  20. 640000
  21. 164836
  22. 565504
  23. 250000
  24. 173889
  25. 23409
  26. 41209
  27. 506944
  28. 511225
  29. 996004
  30. 36747844
  31. 34703881
  32. 50176
  33. 367236
  34. 12100
  35. 624100
  36. 60016009
  37. 253009
  38. 54289
  39. 303601
  40. 10816

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