Yes. Every function with a Num shortcut also has another one.
It’s not clear why: I suspect it may relate to something on Windows keyboards. As Laurie points out, there is no NumLock key on Macs, and Num + makes no sense, as the arrow keys are not on the numpad.
“Num + +” does indeed work: just pressing the + key on the numpad moves the playhead forward. (Pressing + on the main keyboard doesn’t.)