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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 131 · 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. 1.2277² =
  2. 2.323² =
  3. 3.235² =
  4. 4.913² =
  5. 5.648² =
  6. 6.273² =
  7. 7.7201² =
  8. 8.937² =
  9. 9.9806² =
  10. 10.604² =
  11. 11.787² =
  12. 12.252² =
  13. 13.272² =
  14. 14.811² =
  15. 15.501² =
  16. 16.339² =
  17. 17.187² =
  18. 18.126² =
  19. 19.234² =
  20. 20.2449² =
  21. 21.1122² =
  22. 22.870² =
  23. 23.473² =
  24. 24.138² =
  25. 25.215² =
  26. 26.529² =
  27. 27.465² =
  28. 28.101² =
  29. 29.846² =
  30. 30.6424² =
  31. 31.116² =
  32. 32.812² =
  33. 33.935² =
  34. 34.298² =
  35. 35.540² =
  36. 36.3344² =
  37. 37.919² =
  38. 38.830² =
  39. 39.434² =
  40. 40.759² =

Answer key

  1. 5184729
  2. 104329
  3. 55225
  4. 833569
  5. 419904
  6. 74529
  7. 51854401
  8. 877969
  9. 96157636
  10. 364816
  11. 619369
  12. 63504
  13. 73984
  14. 657721
  15. 251001
  16. 114921
  17. 34969
  18. 15876
  19. 54756
  20. 5997601
  21. 1258884
  22. 756900
  23. 223729
  24. 19044
  25. 46225
  26. 279841
  27. 216225
  28. 10201
  29. 715716
  30. 41267776
  31. 13456
  32. 659344
  33. 874225
  34. 88804
  35. 291600
  36. 11182336
  37. 844561
  38. 688900
  39. 188356
  40. 576081

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