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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 954 · 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. 1.439² =
  2. 2.6490² =
  3. 3.630² =
  4. 4.107² =
  5. 5.6285² =
  6. 6.522² =
  7. 7.279² =
  8. 8.6578² =
  9. 9.206² =
  10. 10.102² =
  11. 11.311² =
  12. 12.503² =
  13. 13.276² =
  14. 14.130² =
  15. 15.603² =
  16. 16.996² =
  17. 17.4452² =
  18. 18.371² =
  19. 19.814² =
  20. 20.7310² =
  21. 21.7817² =
  22. 22.8553² =
  23. 23.334² =
  24. 24.842² =
  25. 25.809² =
  26. 26.396² =
  27. 27.318² =
  28. 28.451² =
  29. 29.651² =
  30. 30.241² =
  31. 31.767² =
  32. 32.859² =
  33. 33.2348² =
  34. 34.521² =
  35. 35.337² =
  36. 36.663² =
  37. 37.881² =
  38. 38.499² =
  39. 39.193² =
  40. 40.3438² =

Answer key

  1. 192721
  2. 42120100
  3. 396900
  4. 11449
  5. 39501225
  6. 272484
  7. 77841
  8. 43270084
  9. 42436
  10. 10404
  11. 96721
  12. 253009
  13. 76176
  14. 16900
  15. 363609
  16. 992016
  17. 19820304
  18. 137641
  19. 662596
  20. 53436100
  21. 61105489
  22. 73153809
  23. 111556
  24. 708964
  25. 654481
  26. 156816
  27. 101124
  28. 203401
  29. 423801
  30. 58081
  31. 588289
  32. 737881
  33. 5513104
  34. 271441
  35. 113569
  36. 439569
  37. 776161
  38. 249001
  39. 37249
  40. 11819844

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