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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 918 · 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. 1.338² =
  2. 2.335² =
  3. 3.282² =
  4. 4.5672² =
  5. 5.355² =
  6. 6.909² =
  7. 7.516² =
  8. 8.2454² =
  9. 9.303² =
  10. 10.4419² =
  11. 11.118² =
  12. 12.282² =
  13. 13.216² =
  14. 14.4964² =
  15. 15.616² =
  16. 16.871² =
  17. 17.8230² =
  18. 18.817² =
  19. 19.1463² =
  20. 20.474² =
  21. 21.9981² =
  22. 22.714² =
  23. 23.205² =
  24. 24.620² =
  25. 25.457² =
  26. 26.261² =
  27. 27.402² =
  28. 28.872² =
  29. 29.3574² =
  30. 30.354² =
  31. 31.1634² =
  32. 32.515² =
  33. 33.786² =
  34. 34.119² =
  35. 35.859² =
  36. 36.299² =
  37. 37.375² =
  38. 38.315² =
  39. 39.988² =
  40. 40.7488² =

Answer key

  1. 114244
  2. 112225
  3. 79524
  4. 32171584
  5. 126025
  6. 826281
  7. 266256
  8. 6022116
  9. 91809
  10. 19527561
  11. 13924
  12. 79524
  13. 46656
  14. 24641296
  15. 379456
  16. 758641
  17. 67732900
  18. 667489
  19. 2140369
  20. 224676
  21. 99620361
  22. 509796
  23. 42025
  24. 384400
  25. 208849
  26. 68121
  27. 161604
  28. 760384
  29. 12773476
  30. 125316
  31. 2669956
  32. 265225
  33. 617796
  34. 14161
  35. 737881
  36. 89401
  37. 140625
  38. 99225
  39. 976144
  40. 56070144

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