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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 919 · 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. 1.9882² =
  2. 2.6292² =
  3. 3.255² =
  4. 4.390² =
  5. 5.356² =
  6. 6.6454² =
  7. 7.823² =
  8. 8.354² =
  9. 9.431² =
  10. 10.534² =
  11. 11.907² =
  12. 12.4168² =
  13. 13.481² =
  14. 14.516² =
  15. 15.703² =
  16. 16.354² =
  17. 17.329² =
  18. 18.8979² =
  19. 19.448² =
  20. 20.592² =
  21. 21.507² =
  22. 22.123² =
  23. 23.184² =
  24. 24.656² =
  25. 25.395² =
  26. 26.930² =
  27. 27.103² =
  28. 28.513² =
  29. 29.934² =
  30. 30.3258² =
  31. 31.178² =
  32. 32.258² =
  33. 33.6574² =
  34. 34.1651² =
  35. 35.363² =
  36. 36.1655² =
  37. 37.3149² =
  38. 38.838² =
  39. 39.1223² =
  40. 40.264² =

Answer key

  1. 97653924
  2. 39589264
  3. 65025
  4. 152100
  5. 126736
  6. 41654116
  7. 677329
  8. 125316
  9. 185761
  10. 285156
  11. 822649
  12. 17372224
  13. 231361
  14. 266256
  15. 494209
  16. 125316
  17. 108241
  18. 80622441
  19. 200704
  20. 350464
  21. 257049
  22. 15129
  23. 33856
  24. 430336
  25. 156025
  26. 864900
  27. 10609
  28. 263169
  29. 872356
  30. 10614564
  31. 31684
  32. 66564
  33. 43217476
  34. 2725801
  35. 131769
  36. 2739025
  37. 9916201
  38. 702244
  39. 1495729
  40. 69696

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