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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 888 · 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. 1.3477² =
  2. 2.851² =
  3. 3.5949² =
  4. 4.963² =
  5. 5.181² =
  6. 6.2580² =
  7. 7.302² =
  8. 8.4167² =
  9. 9.888² =
  10. 10.471² =
  11. 11.948² =
  12. 12.811² =
  13. 13.4692² =
  14. 14.9603² =
  15. 15.8954² =
  16. 16.4551² =
  17. 17.3120² =
  18. 18.2112² =
  19. 19.863² =
  20. 20.214² =
  21. 21.512² =
  22. 22.1455² =
  23. 23.201² =
  24. 24.1164² =
  25. 25.717² =
  26. 26.759² =
  27. 27.114² =
  28. 28.1318² =
  29. 29.6533² =
  30. 30.266² =
  31. 31.153² =
  32. 32.196² =
  33. 33.836² =
  34. 34.8001² =
  35. 35.146² =
  36. 36.718² =
  37. 37.1523² =
  38. 38.8975² =
  39. 39.451² =
  40. 40.177² =

Answer key

  1. 12089529
  2. 724201
  3. 35390601
  4. 927369
  5. 32761
  6. 6656400
  7. 91204
  8. 17363889
  9. 788544
  10. 221841
  11. 898704
  12. 657721
  13. 22014864
  14. 92217609
  15. 80174116
  16. 20711601
  17. 9734400
  18. 4460544
  19. 744769
  20. 45796
  21. 262144
  22. 2117025
  23. 40401
  24. 1354896
  25. 514089
  26. 576081
  27. 12996
  28. 1737124
  29. 42680089
  30. 70756
  31. 23409
  32. 38416
  33. 698896
  34. 64016001
  35. 21316
  36. 515524
  37. 2319529
  38. 80550625
  39. 203401
  40. 31329

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