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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 813 · 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. 1.636² =
  2. 2.857² =
  3. 3.180² =
  4. 4.4610² =
  5. 5.145² =
  6. 6.491² =
  7. 7.8579² =
  8. 8.8613² =
  9. 9.648² =
  10. 10.875² =
  11. 11.715² =
  12. 12.9252² =
  13. 13.3680² =
  14. 14.485² =
  15. 15.7162² =
  16. 16.9593² =
  17. 17.559² =
  18. 18.275² =
  19. 19.901² =
  20. 20.656² =
  21. 21.9452² =
  22. 22.645² =
  23. 23.382² =
  24. 24.745² =
  25. 25.322² =
  26. 26.3860² =
  27. 27.335² =
  28. 28.948² =
  29. 29.816² =
  30. 30.1483² =
  31. 31.117² =
  32. 32.5880² =
  33. 33.197² =
  34. 34.256² =
  35. 35.422² =
  36. 36.295² =
  37. 37.261² =
  38. 38.7910² =
  39. 39.853² =
  40. 40.276² =

Answer key

  1. 404496
  2. 734449
  3. 32400
  4. 21252100
  5. 21025
  6. 241081
  7. 73599241
  8. 74183769
  9. 419904
  10. 765625
  11. 511225
  12. 85599504
  13. 13542400
  14. 235225
  15. 51294244
  16. 92025649
  17. 312481
  18. 75625
  19. 811801
  20. 430336
  21. 89340304
  22. 416025
  23. 145924
  24. 555025
  25. 103684
  26. 14899600
  27. 112225
  28. 898704
  29. 665856
  30. 2199289
  31. 13689
  32. 34574400
  33. 38809
  34. 65536
  35. 178084
  36. 87025
  37. 68121
  38. 62568100
  39. 727609
  40. 76176

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