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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 608 · 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. 1.732² =
  2. 2.783² =
  3. 3.177² =
  4. 4.716² =
  5. 5.488² =
  6. 6.387² =
  7. 7.976² =
  8. 8.142² =
  9. 9.921² =
  10. 10.122² =
  11. 11.5811² =
  12. 12.121² =
  13. 13.214² =
  14. 14.5658² =
  15. 15.4512² =
  16. 16.520² =
  17. 17.9938² =
  18. 18.531² =
  19. 19.288² =
  20. 20.102² =
  21. 21.102² =
  22. 22.9149² =
  23. 23.496² =
  24. 24.436² =
  25. 25.531² =
  26. 26.715² =
  27. 27.734² =
  28. 28.1892² =
  29. 29.890² =
  30. 30.8743² =
  31. 31.8019² =
  32. 32.322² =
  33. 33.3108² =
  34. 34.811² =
  35. 35.159² =
  36. 36.198² =
  37. 37.9196² =
  38. 38.2939² =
  39. 39.3938² =
  40. 40.6049² =

Answer key

  1. 535824
  2. 613089
  3. 31329
  4. 512656
  5. 238144
  6. 149769
  7. 952576
  8. 20164
  9. 848241
  10. 14884
  11. 33767721
  12. 14641
  13. 45796
  14. 32012964
  15. 20358144
  16. 270400
  17. 98763844
  18. 281961
  19. 82944
  20. 10404
  21. 10404
  22. 83704201
  23. 246016
  24. 190096
  25. 281961
  26. 511225
  27. 538756
  28. 3579664
  29. 792100
  30. 76440049
  31. 64304361
  32. 103684
  33. 9659664
  34. 657721
  35. 25281
  36. 39204
  37. 84566416
  38. 8637721
  39. 15507844
  40. 36590401

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