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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 906 · 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. 1.414² =
  2. 2.9184² =
  3. 3.354² =
  4. 4.177² =
  5. 5.493² =
  6. 6.889² =
  7. 7.2062² =
  8. 8.824² =
  9. 9.933² =
  10. 10.6167² =
  11. 11.569² =
  12. 12.948² =
  13. 13.691² =
  14. 14.8661² =
  15. 15.8351² =
  16. 16.904² =
  17. 17.511² =
  18. 18.542² =
  19. 19.340² =
  20. 20.207² =
  21. 21.785² =
  22. 22.1646² =
  23. 23.413² =
  24. 24.5920² =
  25. 25.4619² =
  26. 26.721² =
  27. 27.570² =
  28. 28.329² =
  29. 29.9338² =
  30. 30.7773² =
  31. 31.2495² =
  32. 32.2510² =
  33. 33.6696² =
  34. 34.865² =
  35. 35.6023² =
  36. 36.727² =
  37. 37.461² =
  38. 38.440² =
  39. 39.472² =
  40. 40.6947² =

Answer key

  1. 171396
  2. 84345856
  3. 125316
  4. 31329
  5. 243049
  6. 790321
  7. 4251844
  8. 678976
  9. 870489
  10. 38031889
  11. 323761
  12. 898704
  13. 477481
  14. 75012921
  15. 69739201
  16. 817216
  17. 261121
  18. 293764
  19. 115600
  20. 42849
  21. 616225
  22. 2709316
  23. 170569
  24. 35046400
  25. 21335161
  26. 519841
  27. 324900
  28. 108241
  29. 87198244
  30. 60419529
  31. 6225025
  32. 6300100
  33. 44836416
  34. 748225
  35. 36276529
  36. 528529
  37. 212521
  38. 193600
  39. 222784
  40. 48260809

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