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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 472 · 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. 1.4780² =
  2. 2.153² =
  3. 3.6208² =
  4. 4.428² =
  5. 5.253² =
  6. 6.6609² =
  7. 7.902² =
  8. 8.654² =
  9. 9.946² =
  10. 10.6859² =
  11. 11.910² =
  12. 12.8191² =
  13. 13.934² =
  14. 14.236² =
  15. 15.599² =
  16. 16.611² =
  17. 17.349² =
  18. 18.226² =
  19. 19.4907² =
  20. 20.3160² =
  21. 21.364² =
  22. 22.8641² =
  23. 23.796² =
  24. 24.311² =
  25. 25.721² =
  26. 26.221² =
  27. 27.189² =
  28. 28.308² =
  29. 29.347² =
  30. 30.259² =
  31. 31.9719² =
  32. 32.6150² =
  33. 33.371² =
  34. 34.825² =
  35. 35.322² =
  36. 36.238² =
  37. 37.398² =
  38. 38.136² =
  39. 39.6013² =
  40. 40.4812² =

Answer key

  1. 22848400
  2. 23409
  3. 38539264
  4. 183184
  5. 64009
  6. 43678881
  7. 813604
  8. 427716
  9. 894916
  10. 47045881
  11. 828100
  12. 67092481
  13. 872356
  14. 55696
  15. 358801
  16. 373321
  17. 121801
  18. 51076
  19. 24078649
  20. 9985600
  21. 132496
  22. 74666881
  23. 633616
  24. 96721
  25. 519841
  26. 48841
  27. 35721
  28. 94864
  29. 120409
  30. 67081
  31. 94458961
  32. 37822500
  33. 137641
  34. 680625
  35. 103684
  36. 56644
  37. 158404
  38. 18496
  39. 36156169
  40. 23155344

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