There are 2 sub groups to the Yuan. The Jiao and the Fen.
1 Yuan = 10 Jiao
1 Jiao = 10 Fen
Therefore 1 Yuan = 100 Fen
The colloquial term for Yuan is the `Kuai' and for the Jiao is `Mao'.
The denominations of the notes are:
2 (sorry I don't have a picture)
The denominations for the coins are:
The RMB is tied (loosely they say) to the US$ where US$1 = RMB 8.08.
Based on todays cross exchange with the US$ - A$1 = RMB 5.97
1 Yuan = A$ 0.168 - say 17cents.
1 Jiao = A$ 0.017 - 1.7cents
1 Fen = $A 0.0017 - .17 of a cent
The trick is to look at the notes so you don't mix up the Jiao and the Yuan notes (like when I tried the pay a taxi driver 12Yuan, but instead gave him 10 Yuan and 2 Jiao - he wasn't too impressed).
All the Yuan notes have a picture of the man himself - Chairman Mao. So if you see Mao's smiling face looking up at you, then its a full Yuan. If no Mao its a Jiao.
The other way to tell a Yuan from a Jiao is on the notes themselves. The Jiao all say Jiao on them under the number Wu Jiao (5 Jiao), Er Jiao (2 Jiao) and Yi Jiao (1 Jiao).
On the coins, the 1 Yuan coin is the biggest, and it says Yi Yuan (1 Yuan). The 5 Jiao coin is gold and says Wu Jiao (5 Jiao) and the 1 Jiao coin is small and silver and says Yi Jiao (1 Jiao).
The Fen coins are basically worthless, but they are easy to tell as they are very tinny and have only a number on it (ie. it doesn't actually say Fen).