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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 248 · 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. 1.384² =
  2. 2.8860² =
  3. 3.265² =
  4. 4.2854² =
  5. 5.864² =
  6. 6.559² =
  7. 7.562² =
  8. 8.1123² =
  9. 9.939² =
  10. 10.5802² =
  11. 11.2886² =
  12. 12.7589² =
  13. 13.6406² =
  14. 14.576² =
  15. 15.7998² =
  16. 16.180² =
  17. 17.109² =
  18. 18.2940² =
  19. 19.200² =
  20. 20.332² =
  21. 21.829² =
  22. 22.736² =
  23. 23.7471² =
  24. 24.455² =
  25. 25.960² =
  26. 26.793² =
  27. 27.259² =
  28. 28.974² =
  29. 29.989² =
  30. 30.599² =
  31. 31.609² =
  32. 32.4127² =
  33. 33.4916² =
  34. 34.316² =
  35. 35.961² =
  36. 36.804² =
  37. 37.1078² =
  38. 38.273² =
  39. 39.789² =
  40. 40.186² =

Answer key

  1. 147456
  2. 78499600
  3. 70225
  4. 8145316
  5. 746496
  6. 312481
  7. 315844
  8. 1261129
  9. 881721
  10. 33663204
  11. 8328996
  12. 57592921
  13. 41036836
  14. 331776
  15. 63968004
  16. 32400
  17. 11881
  18. 8643600
  19. 40000
  20. 110224
  21. 687241
  22. 541696
  23. 55815841
  24. 207025
  25. 921600
  26. 628849
  27. 67081
  28. 948676
  29. 978121
  30. 358801
  31. 370881
  32. 17032129
  33. 24167056
  34. 99856
  35. 923521
  36. 646416
  37. 1162084
  38. 74529
  39. 622521
  40. 34596

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