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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 838 · 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. 1.339² =
  2. 2.219² =
  3. 3.344² =
  4. 4.1313² =
  5. 5.205² =
  6. 6.385² =
  7. 7.874² =
  8. 8.355² =
  9. 9.724² =
  10. 10.714² =
  11. 11.504² =
  12. 12.732² =
  13. 13.4887² =
  14. 14.2621² =
  15. 15.826² =
  16. 16.732² =
  17. 17.8867² =
  18. 18.967² =
  19. 19.671² =
  20. 20.4458² =
  21. 21.271² =
  22. 22.649² =
  23. 23.558² =
  24. 24.150² =
  25. 25.739² =
  26. 26.998² =
  27. 27.981² =
  28. 28.930² =
  29. 29.433² =
  30. 30.869² =
  31. 31.4090² =
  32. 32.2157² =
  33. 33.453² =
  34. 34.5249² =
  35. 35.4762² =
  36. 36.343² =
  37. 37.2743² =
  38. 38.1205² =
  39. 39.2107² =
  40. 40.842² =

Answer key

  1. 114921
  2. 47961
  3. 118336
  4. 1723969
  5. 42025
  6. 148225
  7. 763876
  8. 126025
  9. 524176
  10. 509796
  11. 254016
  12. 535824
  13. 23882769
  14. 6869641
  15. 682276
  16. 535824
  17. 78623689
  18. 935089
  19. 450241
  20. 19873764
  21. 73441
  22. 421201
  23. 311364
  24. 22500
  25. 546121
  26. 996004
  27. 962361
  28. 864900
  29. 187489
  30. 755161
  31. 16728100
  32. 4652649
  33. 205209
  34. 27552001
  35. 22676644
  36. 117649
  37. 7524049
  38. 1452025
  39. 4439449
  40. 708964

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