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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 163 · 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. 1.279² =
  2. 2.911² =
  3. 3.979² =
  4. 4.3226² =
  5. 5.177² =
  6. 6.644² =
  7. 7.878² =
  8. 8.497² =
  9. 9.205² =
  10. 10.217² =
  11. 11.504² =
  12. 12.775² =
  13. 13.501² =
  14. 14.927² =
  15. 15.410² =
  16. 16.802² =
  17. 17.157² =
  18. 18.183² =
  19. 19.669² =
  20. 20.7240² =
  21. 21.655² =
  22. 22.860² =
  23. 23.7713² =
  24. 24.226² =
  25. 25.172² =
  26. 26.7222² =
  27. 27.249² =
  28. 28.249² =
  29. 29.4621² =
  30. 30.3688² =
  31. 31.868² =
  32. 32.781² =
  33. 33.937² =
  34. 34.252² =
  35. 35.571² =
  36. 36.799² =
  37. 37.993² =
  38. 38.639² =
  39. 39.4077² =
  40. 40.262² =

Answer key

  1. 77841
  2. 829921
  3. 958441
  4. 10407076
  5. 31329
  6. 414736
  7. 770884
  8. 247009
  9. 42025
  10. 47089
  11. 254016
  12. 600625
  13. 251001
  14. 859329
  15. 168100
  16. 643204
  17. 24649
  18. 33489
  19. 447561
  20. 52417600
  21. 429025
  22. 739600
  23. 59490369
  24. 51076
  25. 29584
  26. 52157284
  27. 62001
  28. 62001
  29. 21353641
  30. 13601344
  31. 753424
  32. 609961
  33. 877969
  34. 63504
  35. 326041
  36. 638401
  37. 986049
  38. 408321
  39. 16621929
  40. 68644

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