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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 241 · 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. 1.507² =
  2. 2.238² =
  3. 3.164² =
  4. 4.9115² =
  5. 5.9866² =
  6. 6.7529² =
  7. 7.363² =
  8. 8.471² =
  9. 9.851² =
  10. 10.1636² =
  11. 11.674² =
  12. 12.831² =
  13. 13.375² =
  14. 14.7822² =
  15. 15.270² =
  16. 16.8012² =
  17. 17.422² =
  18. 18.984² =
  19. 19.741² =
  20. 20.164² =
  21. 21.8109² =
  22. 22.2910² =
  23. 23.762² =
  24. 24.535² =
  25. 25.885² =
  26. 26.102² =
  27. 27.807² =
  28. 28.102² =
  29. 29.142² =
  30. 30.321² =
  31. 31.1042² =
  32. 32.778² =
  33. 33.976² =
  34. 34.929² =
  35. 35.136² =
  36. 36.6909² =
  37. 37.138² =
  38. 38.2014² =
  39. 39.137² =
  40. 40.573² =

Answer key

  1. 257049
  2. 56644
  3. 26896
  4. 83083225
  5. 97337956
  6. 56685841
  7. 131769
  8. 221841
  9. 724201
  10. 2676496
  11. 454276
  12. 690561
  13. 140625
  14. 61183684
  15. 72900
  16. 64192144
  17. 178084
  18. 968256
  19. 549081
  20. 26896
  21. 65755881
  22. 8468100
  23. 580644
  24. 286225
  25. 783225
  26. 10404
  27. 651249
  28. 10404
  29. 20164
  30. 103041
  31. 1085764
  32. 605284
  33. 952576
  34. 863041
  35. 18496
  36. 47734281
  37. 19044
  38. 4056196
  39. 18769
  40. 328329

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