Best Glide: 62-75 is the range the POH has I think, 70 works well for a quick, easy to remember number.
Approach speeds- 60-70 kts. (usually 70).
You can fly the pattern basically the same speeds as a 172, except a little faster on final. I always taught 90, 80, 60 for downwind, base, final in the 172, and 100, 90, 70 in the 182. Its definitely not a hard airplane to get slowed down, and sinks like a brick compared to the 172.
Ah yeah...I should've specified- the numbers I gave are for an 'S' Model (1998). I checked all of my numbers to a little reference card I made when I first started instructing in it, and it looks like they are all correct except Vno and Vne which I forgot, and no longer have the POH for that airplane.