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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 912 · 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. 1.476² =
  2. 2.9997² =
  3. 3.657² =
  4. 4.194² =
  5. 5.951² =
  6. 6.5903² =
  7. 7.280² =
  8. 8.898² =
  9. 9.986² =
  10. 10.488² =
  11. 11.274² =
  12. 12.766² =
  13. 13.238² =
  14. 14.256² =
  15. 15.318² =
  16. 16.2784² =
  17. 17.602² =
  18. 18.2359² =
  19. 19.4882² =
  20. 20.3146² =
  21. 21.687² =
  22. 22.343² =
  23. 23.147² =
  24. 24.4942² =
  25. 25.555² =
  26. 26.149² =
  27. 27.976² =
  28. 28.236² =
  29. 29.989² =
  30. 30.1420² =
  31. 31.404² =
  32. 32.343² =
  33. 33.3088² =
  34. 34.6961² =
  35. 35.108² =
  36. 36.582² =
  37. 37.1821² =
  38. 38.989² =
  39. 39.772² =
  40. 40.904² =

Answer key

  1. 226576
  2. 99940009
  3. 431649
  4. 37636
  5. 904401
  6. 34845409
  7. 78400
  8. 806404
  9. 972196
  10. 238144
  11. 75076
  12. 586756
  13. 56644
  14. 65536
  15. 101124
  16. 7750656
  17. 362404
  18. 5564881
  19. 23833924
  20. 9897316
  21. 471969
  22. 117649
  23. 21609
  24. 24423364
  25. 308025
  26. 22201
  27. 952576
  28. 55696
  29. 978121
  30. 2016400
  31. 163216
  32. 117649
  33. 9535744
  34. 48455521
  35. 11664
  36. 338724
  37. 3316041
  38. 978121
  39. 595984
  40. 817216

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