You can add page numbers to your PowerPoint slideshow through the "Slide Master" page, which lets you edit your entire slideshow at once.

You can add Slide Numbers and Date and Time to your PowerPoint presentation to make it more impressive, and this post shows how to do that.

Then, to add a zoom animation effect to your slide, duplicate the slide. For this, select the slide in the left pane, right-click it and choose ‘ Duplicate Slide ’ option.