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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 709 · 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. 1.624² =
  2. 2.281² =
  3. 3.261² =
  4. 4.6297² =
  5. 5.244² =
  6. 6.933² =
  7. 7.267² =
  8. 8.2191² =
  9. 9.978² =
  10. 10.6834² =
  11. 11.592² =
  12. 12.354² =
  13. 13.614² =
  14. 14.488² =
  15. 15.9533² =
  16. 16.6046² =
  17. 17.469² =
  18. 18.7377² =
  19. 19.780² =
  20. 20.673² =
  21. 21.716² =
  22. 22.2370² =
  23. 23.177² =
  24. 24.8981² =
  25. 25.605² =
  26. 26.1962² =
  27. 27.5148² =
  28. 28.123² =
  29. 29.874² =
  30. 30.323² =
  31. 31.148² =
  32. 32.6016² =
  33. 33.183² =
  34. 34.726² =
  35. 35.647² =
  36. 36.693² =
  37. 37.8052² =
  38. 38.1740² =
  39. 39.347² =
  40. 40.4773² =

Answer key

  1. 389376
  2. 78961
  3. 68121
  4. 39652209
  5. 59536
  6. 870489
  7. 71289
  8. 4800481
  9. 956484
  10. 46703556
  11. 350464
  12. 125316
  13. 376996
  14. 238144
  15. 90878089
  16. 36554116
  17. 219961
  18. 54420129
  19. 608400
  20. 452929
  21. 512656
  22. 5616900
  23. 31329
  24. 80658361
  25. 366025
  26. 3849444
  27. 26501904
  28. 15129
  29. 763876
  30. 104329
  31. 21904
  32. 36192256
  33. 33489
  34. 527076
  35. 418609
  36. 480249
  37. 64834704
  38. 3027600
  39. 120409
  40. 22781529

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