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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 83 · 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. 1.485² =
  2. 2.601² =
  3. 3.351² =
  4. 4.7547² =
  5. 5.836² =
  6. 6.3098² =
  7. 7.657² =
  8. 8.502² =
  9. 9.537² =
  10. 10.545² =
  11. 11.352² =
  12. 12.193² =
  13. 13.2913² =
  14. 14.423² =
  15. 15.7186² =
  16. 16.940² =
  17. 17.1175² =
  18. 18.160² =
  19. 19.5353² =
  20. 20.460² =
  21. 21.159² =
  22. 22.792² =
  23. 23.193² =
  24. 24.1537² =
  25. 25.240² =
  26. 26.941² =
  27. 27.5671² =
  28. 28.503² =
  29. 29.9072² =
  30. 30.792² =
  31. 31.184² =
  32. 32.5141² =
  33. 33.3444² =
  34. 34.714² =
  35. 35.384² =
  36. 36.462² =
  37. 37.557² =
  38. 38.700² =
  39. 39.6743² =
  40. 40.768² =

Answer key

  1. 235225
  2. 361201
  3. 123201
  4. 56957209
  5. 698896
  6. 9597604
  7. 431649
  8. 252004
  9. 288369
  10. 297025
  11. 123904
  12. 37249
  13. 8485569
  14. 178929
  15. 51638596
  16. 883600
  17. 1380625
  18. 25600
  19. 28654609
  20. 211600
  21. 25281
  22. 627264
  23. 37249
  24. 2362369
  25. 57600
  26. 885481
  27. 32160241
  28. 253009
  29. 82301184
  30. 627264
  31. 33856
  32. 26429881
  33. 11861136
  34. 509796
  35. 147456
  36. 213444
  37. 310249
  38. 490000
  39. 45468049
  40. 589824

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