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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 455 · 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. 1.5262² =
  2. 2.843² =
  3. 3.678² =
  4. 4.422² =
  5. 5.7615² =
  6. 6.2482² =
  7. 7.994² =
  8. 8.4206² =
  9. 9.413² =
  10. 10.6326² =
  11. 11.484² =
  12. 12.318² =
  13. 13.449² =
  14. 14.496² =
  15. 15.696² =
  16. 16.113² =
  17. 17.555² =
  18. 18.423² =
  19. 19.8537² =
  20. 20.104² =
  21. 21.318² =
  22. 22.596² =
  23. 23.908² =
  24. 24.640² =
  25. 25.4973² =
  26. 26.9016² =
  27. 27.338² =
  28. 28.919² =
  29. 29.931² =
  30. 30.687² =
  31. 31.1725² =
  32. 32.3526² =
  33. 33.903² =
  34. 34.312² =
  35. 35.5906² =
  36. 36.899² =
  37. 37.377² =
  38. 38.295² =
  39. 39.9145² =
  40. 40.5427² =

Answer key

  1. 27688644
  2. 710649
  3. 459684
  4. 178084
  5. 57988225
  6. 6160324
  7. 988036
  8. 17690436
  9. 170569
  10. 40018276
  11. 234256
  12. 101124
  13. 201601
  14. 246016
  15. 484416
  16. 12769
  17. 308025
  18. 178929
  19. 72880369
  20. 10816
  21. 101124
  22. 355216
  23. 824464
  24. 409600
  25. 24730729
  26. 81288256
  27. 114244
  28. 844561
  29. 866761
  30. 471969
  31. 2975625
  32. 12432676
  33. 815409
  34. 97344
  35. 34880836
  36. 808201
  37. 142129
  38. 87025
  39. 83631025
  40. 29452329

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