Do I play as if the notes are that of the treble clef when the symbol is on the top and bottom measures?

Yes, when the symbol indicating the treble clef is placed at the top of the staff, you play the notes as written in the treble clef. Conversely, if the symbol appears at the bottom measure and represents a bass clef, you would interpret the notes according to the bass clef. Always refer to the specific clef indicated to determine the correct pitch for the notes.