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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 691 · 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. 1.9102² =
  2. 2.536² =
  3. 3.306² =
  4. 4.980² =
  5. 5.3895² =
  6. 6.932² =
  7. 7.545² =
  8. 8.584² =
  9. 9.664² =
  10. 10.3268² =
  11. 11.368² =
  12. 12.386² =
  13. 13.336² =
  14. 14.868² =
  15. 15.204² =
  16. 16.802² =
  17. 17.635² =
  18. 18.1010² =
  19. 19.105² =
  20. 20.813² =
  21. 21.160² =
  22. 22.5622² =
  23. 23.681² =
  24. 24.131² =
  25. 25.266² =
  26. 26.948² =
  27. 27.271² =
  28. 28.595² =
  29. 29.999² =
  30. 30.353² =
  31. 31.964² =
  32. 32.259² =
  33. 33.678² =
  34. 34.107² =
  35. 35.442² =
  36. 36.2849² =
  37. 37.7069² =
  38. 38.707² =
  39. 39.506² =
  40. 40.739² =

Answer key

  1. 82846404
  2. 287296
  3. 93636
  4. 960400
  5. 15171025
  6. 868624
  7. 297025
  8. 341056
  9. 440896
  10. 10679824
  11. 135424
  12. 148996
  13. 112896
  14. 753424
  15. 41616
  16. 643204
  17. 403225
  18. 1020100
  19. 11025
  20. 660969
  21. 25600
  22. 31606884
  23. 463761
  24. 17161
  25. 70756
  26. 898704
  27. 73441
  28. 354025
  29. 998001
  30. 124609
  31. 929296
  32. 67081
  33. 459684
  34. 11449
  35. 195364
  36. 8116801
  37. 49970761
  38. 499849
  39. 256036
  40. 546121

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