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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 972 · 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. 1.8376² =
  2. 2.102² =
  3. 3.912² =
  4. 4.561² =
  5. 5.207² =
  6. 6.7457² =
  7. 7.8879² =
  8. 8.581² =
  9. 9.370² =
  10. 10.346² =
  11. 11.4983² =
  12. 12.469² =
  13. 13.644² =
  14. 14.172² =
  15. 15.695² =
  16. 16.469² =
  17. 17.363² =
  18. 18.331² =
  19. 19.4564² =
  20. 20.191² =
  21. 21.147² =
  22. 22.483² =
  23. 23.212² =
  24. 24.785² =
  25. 25.924² =
  26. 26.3547² =
  27. 27.638² =
  28. 28.6126² =
  29. 29.928² =
  30. 30.751² =
  31. 31.712² =
  32. 32.2429² =
  33. 33.196² =
  34. 34.962² =
  35. 35.448² =
  36. 36.322² =
  37. 37.556² =
  38. 38.640² =
  39. 39.2606² =
  40. 40.163² =

Answer key

  1. 70157376
  2. 10404
  3. 831744
  4. 314721
  5. 42849
  6. 55606849
  7. 78836641
  8. 337561
  9. 136900
  10. 119716
  11. 24830289
  12. 219961
  13. 414736
  14. 29584
  15. 483025
  16. 219961
  17. 131769
  18. 109561
  19. 20830096
  20. 36481
  21. 21609
  22. 233289
  23. 44944
  24. 616225
  25. 853776
  26. 12581209
  27. 407044
  28. 37527876
  29. 861184
  30. 564001
  31. 506944
  32. 5900041
  33. 38416
  34. 925444
  35. 200704
  36. 103684
  37. 309136
  38. 409600
  39. 6791236
  40. 26569

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