i am doing a presentation for spanish how do i say "the end"?
You could always just say '¿Preguntas?'
I agree with James. "The end" = "Fin", but I think is not a good idea to put it into a final presentation. If you are reading the presentation in front of an audience is time to go to the "Ruegos y preguntas" and then to thank the audience for coming, but if you have to show your presentation, maybe we would say something like "Esta presentación ha sido realizada por 'Trevor'. Tanto su contenido temático como su diseño gráfico es para uso exclusivo de su persona" Or something more simple like James said "y con esto concluye mi presentación". It's up to you, but "FIN" is not a good end to finish a presentation.
...y colorín, colorado este cuento se ha acabado.
James Santiago said:
. It sounds as if you are reading a children's book. A more sophisticated approach .
LadyDi is correct, as usual, but I'll add that it isn't very good stylistically to say "The end" or "Fin" at the end of a presentation. It sounds as if you are reading a children's book. A more sophisticated approach would be to say something like "And that concludes my presentation," or just to thank the audience for their attention.
Technically, it's just "fin".