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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 810 · 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. 1.553² =
  2. 2.2573² =
  3. 3.982² =
  4. 4.453² =
  5. 5.1455² =
  6. 6.870² =
  7. 7.9296² =
  8. 8.643² =
  9. 9.8296² =
  10. 10.554² =
  11. 11.6011² =
  12. 12.608² =
  13. 13.5761² =
  14. 14.723² =
  15. 15.5408² =
  16. 16.424² =
  17. 17.368² =
  18. 18.539² =
  19. 19.876² =
  20. 20.8486² =
  21. 21.672² =
  22. 22.513² =
  23. 23.439² =
  24. 24.974² =
  25. 25.361² =
  26. 26.630² =
  27. 27.453² =
  28. 28.120² =
  29. 29.752² =
  30. 30.629² =
  31. 31.360² =
  32. 32.407² =
  33. 33.440² =
  34. 34.911² =
  35. 35.149² =
  36. 36.838² =
  37. 37.379² =
  38. 38.134² =
  39. 39.638² =
  40. 40.713² =

Answer key

  1. 305809
  2. 6620329
  3. 964324
  4. 205209
  5. 2117025
  6. 756900
  7. 86415616
  8. 413449
  9. 68823616
  10. 306916
  11. 36132121
  12. 369664
  13. 33189121
  14. 522729
  15. 29246464
  16. 179776
  17. 135424
  18. 290521
  19. 767376
  20. 72012196
  21. 451584
  22. 263169
  23. 192721
  24. 948676
  25. 130321
  26. 396900
  27. 205209
  28. 14400
  29. 565504
  30. 395641
  31. 129600
  32. 165649
  33. 193600
  34. 829921
  35. 22201
  36. 702244
  37. 143641
  38. 17956
  39. 407044
  40. 508369

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