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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 744 · 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. 1.407² =
  2. 2.7493² =
  3. 3.352² =
  4. 4.260² =
  5. 5.560² =
  6. 6.552² =
  7. 7.859² =
  8. 8.981² =
  9. 9.907² =
  10. 10.7444² =
  11. 11.133² =
  12. 12.122² =
  13. 13.142² =
  14. 14.9722² =
  15. 15.123² =
  16. 16.8333² =
  17. 17.335² =
  18. 18.720² =
  19. 19.724² =
  20. 20.639² =
  21. 21.4178² =
  22. 22.275² =
  23. 23.689² =
  24. 24.3606² =
  25. 25.843² =
  26. 26.1800² =
  27. 27.147² =
  28. 28.414² =
  29. 29.398² =
  30. 30.992² =
  31. 31.502² =
  32. 32.965² =
  33. 33.645² =
  34. 34.326² =
  35. 35.716² =
  36. 36.140² =
  37. 37.207² =
  38. 38.592² =
  39. 39.236² =
  40. 40.355² =

Answer key

  1. 165649
  2. 56145049
  3. 123904
  4. 67600
  5. 313600
  6. 304704
  7. 737881
  8. 962361
  9. 822649
  10. 55413136
  11. 17689
  12. 14884
  13. 20164
  14. 94517284
  15. 15129
  16. 69438889
  17. 112225
  18. 518400
  19. 524176
  20. 408321
  21. 17455684
  22. 75625
  23. 474721
  24. 13003236
  25. 710649
  26. 3240000
  27. 21609
  28. 171396
  29. 158404
  30. 984064
  31. 252004
  32. 931225
  33. 416025
  34. 106276
  35. 512656
  36. 19600
  37. 42849
  38. 350464
  39. 55696
  40. 126025

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