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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 868 · 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. 1.649² =
  2. 2.661² =
  3. 3.5346² =
  4. 4.527² =
  5. 5.193² =
  6. 6.6821² =
  7. 7.7256² =
  8. 8.314² =
  9. 9.248² =
  10. 10.486² =
  11. 11.211² =
  12. 12.119² =
  13. 13.639² =
  14. 14.3231² =
  15. 15.924² =
  16. 16.242² =
  17. 17.4581² =
  18. 18.6659² =
  19. 19.990² =
  20. 20.6467² =
  21. 21.312² =
  22. 22.468² =
  23. 23.357² =
  24. 24.287² =
  25. 25.4970² =
  26. 26.108² =
  27. 27.700² =
  28. 28.459² =
  29. 29.498² =
  30. 30.452² =
  31. 31.263² =
  32. 32.885² =
  33. 33.698² =
  34. 34.7093² =
  35. 35.402² =
  36. 36.134² =
  37. 37.273² =
  38. 38.853² =
  39. 39.415² =
  40. 40.476² =

Answer key

  1. 421201
  2. 436921
  3. 28579716
  4. 277729
  5. 37249
  6. 46526041
  7. 52649536
  8. 98596
  9. 61504
  10. 236196
  11. 44521
  12. 14161
  13. 408321
  14. 10439361
  15. 853776
  16. 58564
  17. 20985561
  18. 44342281
  19. 980100
  20. 41822089
  21. 97344
  22. 219024
  23. 127449
  24. 82369
  25. 24700900
  26. 11664
  27. 490000
  28. 210681
  29. 248004
  30. 204304
  31. 69169
  32. 783225
  33. 487204
  34. 50310649
  35. 161604
  36. 17956
  37. 74529
  38. 727609
  39. 172225
  40. 226576

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