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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 775 · 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. 1.204² =
  2. 2.1157² =
  3. 3.798² =
  4. 4.336² =
  5. 5.3462² =
  6. 6.8951² =
  7. 7.165² =
  8. 8.1604² =
  9. 9.1144² =
  10. 10.901² =
  11. 11.236² =
  12. 12.8193² =
  13. 13.496² =
  14. 14.124² =
  15. 15.5143² =
  16. 16.844² =
  17. 17.342² =
  18. 18.305² =
  19. 19.485² =
  20. 20.273² =
  21. 21.6519² =
  22. 22.512² =
  23. 23.1521² =
  24. 24.213² =
  25. 25.7272² =
  26. 26.599² =
  27. 27.824² =
  28. 28.366² =
  29. 29.4179² =
  30. 30.125² =
  31. 31.882² =
  32. 32.103² =
  33. 33.539² =
  34. 34.444² =
  35. 35.223² =
  36. 36.173² =
  37. 37.3048² =
  38. 38.766² =
  39. 39.1285² =
  40. 40.4283² =

Answer key

  1. 41616
  2. 1338649
  3. 636804
  4. 112896
  5. 11985444
  6. 80120401
  7. 27225
  8. 2572816
  9. 1308736
  10. 811801
  11. 55696
  12. 67125249
  13. 246016
  14. 15376
  15. 26450449
  16. 712336
  17. 116964
  18. 93025
  19. 235225
  20. 74529
  21. 42497361
  22. 262144
  23. 2313441
  24. 45369
  25. 52881984
  26. 358801
  27. 678976
  28. 133956
  29. 17464041
  30. 15625
  31. 777924
  32. 10609
  33. 290521
  34. 197136
  35. 49729
  36. 29929
  37. 9290304
  38. 586756
  39. 1651225
  40. 18344089

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