Select an object. Press "Q" and you can use Scale tool on it. Wanna de-select this object and select another one? Double-click outside of the object, and Scale tool is no longer selected. Then simply click on another object, press Q and use Scale tool on it. And so on.
This is how I do it... You don't need to press ctrl/cmd to exit temporarily Scale Tool mode. And if you need to simply go around the document (use hand tool, for example, while still having selected the Scale tool), just press SPACE, navigate to where you want, release space, and continue working with Scale tool on the previously selected object...
Hope this helps!
I'm still getting used to the way Fireworks operates, having been a PS user for years!
Glad I helped!
Fireworks is much more intuitive than Photoshop. Please, if you have any other questions, do not hesitate to ask them in the forums!
I've moved over because I really like the pixel-accurate drawing tools and site prototyping features. I'm sure that it won't take too long to get used to FW.