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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 307 · 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. 1.1964² =
  2. 2.882² =
  3. 3.370² =
  4. 4.473² =
  5. 5.396² =
  6. 6.160² =
  7. 7.153² =
  8. 8.956² =
  9. 9.993² =
  10. 10.186² =
  11. 11.262² =
  12. 12.6647² =
  13. 13.761² =
  14. 14.264² =
  15. 15.1679² =
  16. 16.652² =
  17. 17.771² =
  18. 18.266² =
  19. 19.6167² =
  20. 20.257² =
  21. 21.574² =
  22. 22.810² =
  23. 23.900² =
  24. 24.633² =
  25. 25.194² =
  26. 26.8376² =
  27. 27.2457² =
  28. 28.844² =
  29. 29.5308² =
  30. 30.973² =
  31. 31.454² =
  32. 32.651² =
  33. 33.148² =
  34. 34.792² =
  35. 35.238² =
  36. 36.775² =
  37. 37.8549² =
  38. 38.934² =
  39. 39.4849² =
  40. 40.781² =

Answer key

  1. 3857296
  2. 777924
  3. 136900
  4. 223729
  5. 156816
  6. 25600
  7. 23409
  8. 913936
  9. 986049
  10. 34596
  11. 68644
  12. 44182609
  13. 579121
  14. 69696
  15. 2819041
  16. 425104
  17. 594441
  18. 70756
  19. 38031889
  20. 66049
  21. 329476
  22. 656100
  23. 810000
  24. 400689
  25. 37636
  26. 70157376
  27. 6036849
  28. 712336
  29. 28174864
  30. 946729
  31. 206116
  32. 423801
  33. 21904
  34. 627264
  35. 56644
  36. 600625
  37. 73085401
  38. 872356
  39. 23512801
  40. 609961

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