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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 391 · 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. 1.9615² =
  2. 2.457² =
  3. 3.4864² =
  4. 4.203² =
  5. 5.260² =
  6. 6.893² =
  7. 7.370² =
  8. 8.503² =
  9. 9.5036² =
  10. 10.942² =
  11. 11.556² =
  12. 12.5437² =
  13. 13.288² =
  14. 14.6935² =
  15. 15.6190² =
  16. 16.468² =
  17. 17.204² =
  18. 18.242² =
  19. 19.900² =
  20. 20.668² =
  21. 21.523² =
  22. 22.853² =
  23. 23.230² =
  24. 24.6287² =
  25. 25.1042² =
  26. 26.1488² =
  27. 27.2872² =
  28. 28.891² =
  29. 29.297² =
  30. 30.733² =
  31. 31.783² =
  32. 32.8209² =
  33. 33.482² =
  34. 34.632² =
  35. 35.717² =
  36. 36.914² =
  37. 37.541² =
  38. 38.794² =
  39. 39.304² =
  40. 40.921² =

Answer key

  1. 92448225
  2. 208849
  3. 23658496
  4. 41209
  5. 67600
  6. 797449
  7. 136900
  8. 253009
  9. 25361296
  10. 887364
  11. 309136
  12. 29560969
  13. 82944
  14. 48094225
  15. 38316100
  16. 219024
  17. 41616
  18. 58564
  19. 810000
  20. 446224
  21. 273529
  22. 727609
  23. 52900
  24. 39526369
  25. 1085764
  26. 2214144
  27. 8248384
  28. 793881
  29. 88209
  30. 537289
  31. 613089
  32. 67387681
  33. 232324
  34. 399424
  35. 514089
  36. 835396
  37. 292681
  38. 630436
  39. 92416
  40. 848241

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