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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 544 · 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. 1.696² =
  2. 2.994² =
  3. 3.674² =
  4. 4.364² =
  5. 5.483² =
  6. 6.5538² =
  7. 7.859² =
  8. 8.889² =
  9. 9.1946² =
  10. 10.641² =
  11. 11.379² =
  12. 12.410² =
  13. 13.907² =
  14. 14.3341² =
  15. 15.131² =
  16. 16.963² =
  17. 17.557² =
  18. 18.772² =
  19. 19.482² =
  20. 20.636² =
  21. 21.577² =
  22. 22.209² =
  23. 23.8877² =
  24. 24.469² =
  25. 25.495² =
  26. 26.1677² =
  27. 27.383² =
  28. 28.343² =
  29. 29.802² =
  30. 30.482² =
  31. 31.383² =
  32. 32.1454² =
  33. 33.114² =
  34. 34.258² =
  35. 35.5406² =
  36. 36.5236² =
  37. 37.463² =
  38. 38.5258² =
  39. 39.944² =
  40. 40.1470² =

Answer key

  1. 484416
  2. 988036
  3. 454276
  4. 132496
  5. 233289
  6. 30669444
  7. 737881
  8. 790321
  9. 3786916
  10. 410881
  11. 143641
  12. 168100
  13. 822649
  14. 11162281
  15. 17161
  16. 927369
  17. 310249
  18. 595984
  19. 232324
  20. 404496
  21. 332929
  22. 43681
  23. 78801129
  24. 219961
  25. 245025
  26. 2812329
  27. 146689
  28. 117649
  29. 643204
  30. 232324
  31. 146689
  32. 2114116
  33. 12996
  34. 66564
  35. 29224836
  36. 27415696
  37. 214369
  38. 27646564
  39. 891136
  40. 2160900

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