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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 588 · 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. 1.481² =
  2. 2.6862² =
  3. 3.1374² =
  4. 4.904² =
  5. 5.905² =
  6. 6.8598² =
  7. 7.9657² =
  8. 8.270² =
  9. 9.582² =
  10. 10.824² =
  11. 11.301² =
  12. 12.343² =
  13. 13.259² =
  14. 14.257² =
  15. 15.3889² =
  16. 16.8783² =
  17. 17.269² =
  18. 18.701² =
  19. 19.223² =
  20. 20.151² =
  21. 21.771² =
  22. 22.690² =
  23. 23.287² =
  24. 24.551² =
  25. 25.333² =
  26. 26.354² =
  27. 27.182² =
  28. 28.7724² =
  29. 29.270² =
  30. 30.934² =
  31. 31.7832² =
  32. 32.190² =
  33. 33.1485² =
  34. 34.3525² =
  35. 35.640² =
  36. 36.275² =
  37. 37.148² =
  38. 38.869² =
  39. 39.3574² =
  40. 40.4529² =

Answer key

  1. 231361
  2. 47087044
  3. 1887876
  4. 817216
  5. 819025
  6. 73925604
  7. 93257649
  8. 72900
  9. 338724
  10. 678976
  11. 90601
  12. 117649
  13. 67081
  14. 66049
  15. 15124321
  16. 77141089
  17. 72361
  18. 491401
  19. 49729
  20. 22801
  21. 594441
  22. 476100
  23. 82369
  24. 303601
  25. 110889
  26. 125316
  27. 33124
  28. 59660176
  29. 72900
  30. 872356
  31. 61340224
  32. 36100
  33. 2205225
  34. 12425625
  35. 409600
  36. 75625
  37. 21904
  38. 755161
  39. 12773476
  40. 20511841

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