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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 130 · 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. 1.250² =
  2. 2.325² =
  3. 3.8388² =
  4. 4.394² =
  5. 5.261² =
  6. 6.308² =
  7. 7.535² =
  8. 8.4719² =
  9. 9.472² =
  10. 10.960² =
  11. 11.640² =
  12. 12.8994² =
  13. 13.187² =
  14. 14.112² =
  15. 15.383² =
  16. 16.174² =
  17. 17.6635² =
  18. 18.904² =
  19. 19.2235² =
  20. 20.354² =
  21. 21.339² =
  22. 22.5316² =
  23. 23.217² =
  24. 24.328² =
  25. 25.517² =
  26. 26.511² =
  27. 27.123² =
  28. 28.403² =
  29. 29.329² =
  30. 30.6814² =
  31. 31.305² =
  32. 32.944² =
  33. 33.178² =
  34. 34.294² =
  35. 35.8154² =
  36. 36.670² =
  37. 37.9095² =
  38. 38.2276² =
  39. 39.700² =
  40. 40.210² =

Answer key

  1. 62500
  2. 105625
  3. 70358544
  4. 155236
  5. 68121
  6. 94864
  7. 286225
  8. 22268961
  9. 222784
  10. 921600
  11. 409600
  12. 80892036
  13. 34969
  14. 12544
  15. 146689
  16. 30276
  17. 44023225
  18. 817216
  19. 4995225
  20. 125316
  21. 114921
  22. 28259856
  23. 47089
  24. 107584
  25. 267289
  26. 261121
  27. 15129
  28. 162409
  29. 108241
  30. 46430596
  31. 93025
  32. 891136
  33. 31684
  34. 86436
  35. 66487716
  36. 448900
  37. 82719025
  38. 5180176
  39. 490000
  40. 44100

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