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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 525 · 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. 1.4025² =
  2. 2.993² =
  3. 3.858² =
  4. 4.1108² =
  5. 5.444² =
  6. 6.628² =
  7. 7.301² =
  8. 8.9770² =
  9. 9.1107² =
  10. 10.2355² =
  11. 11.422² =
  12. 12.3086² =
  13. 13.528² =
  14. 14.348² =
  15. 15.721² =
  16. 16.469² =
  17. 17.116² =
  18. 18.342² =
  19. 19.782² =
  20. 20.794² =
  21. 21.317² =
  22. 22.959² =
  23. 23.5404² =
  24. 24.775² =
  25. 25.631² =
  26. 26.665² =
  27. 27.640² =
  28. 28.620² =
  29. 29.269² =
  30. 30.948² =
  31. 31.5500² =
  32. 32.3454² =
  33. 33.7407² =
  34. 34.268² =
  35. 35.523² =
  36. 36.184² =
  37. 37.907² =
  38. 38.576² =
  39. 39.995² =
  40. 40.260² =

Answer key

  1. 16200625
  2. 986049
  3. 736164
  4. 1227664
  5. 197136
  6. 394384
  7. 90601
  8. 95452900
  9. 1225449
  10. 5546025
  11. 178084
  12. 9523396
  13. 278784
  14. 121104
  15. 519841
  16. 219961
  17. 13456
  18. 116964
  19. 611524
  20. 630436
  21. 100489
  22. 919681
  23. 29203216
  24. 600625
  25. 398161
  26. 442225
  27. 409600
  28. 384400
  29. 72361
  30. 898704
  31. 30250000
  32. 11930116
  33. 54863649
  34. 71824
  35. 273529
  36. 33856
  37. 822649
  38. 331776
  39. 990025
  40. 67600

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