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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 15 · 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. 1.445² =
  2. 2.485² =
  3. 3.849² =
  4. 4.1786² =
  5. 5.281² =
  6. 6.9742² =
  7. 7.462² =
  8. 8.1314² =
  9. 9.955² =
  10. 10.1236² =
  11. 11.924² =
  12. 12.834² =
  13. 13.509² =
  14. 14.9309² =
  15. 15.2069² =
  16. 16.705² =
  17. 17.5653² =
  18. 18.4324² =
  19. 19.759² =
  20. 20.412² =
  21. 21.372² =
  22. 22.418² =
  23. 23.417² =
  24. 24.411² =
  25. 25.463² =
  26. 26.668² =
  27. 27.367² =
  28. 28.277² =
  29. 29.768² =
  30. 30.237² =
  31. 31.399² =
  32. 32.135² =
  33. 33.725² =
  34. 34.340² =
  35. 35.786² =
  36. 36.4077² =
  37. 37.917² =
  38. 38.1382² =
  39. 39.2593² =
  40. 40.828² =

Answer key

  1. 198025
  2. 235225
  3. 720801
  4. 3189796
  5. 78961
  6. 94906564
  7. 213444
  8. 1726596
  9. 912025
  10. 1527696
  11. 853776
  12. 695556
  13. 259081
  14. 86657481
  15. 4280761
  16. 497025
  17. 31956409
  18. 18696976
  19. 576081
  20. 169744
  21. 138384
  22. 174724
  23. 173889
  24. 168921
  25. 214369
  26. 446224
  27. 134689
  28. 76729
  29. 589824
  30. 56169
  31. 159201
  32. 18225
  33. 525625
  34. 115600
  35. 617796
  36. 16621929
  37. 840889
  38. 1909924
  39. 6723649
  40. 685584

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