Need help identifying AUSTRALIAN coins.?

Question

my mom just came back from australia and gave me some coins,ok few are 2dollar coins,they are thick and brown

but there are 2 coins i cant identify i.e. a big siler with 20 written over it and a small silver coin with 5 written over it,so are they dollars or cents. I can post pics if i want :)

Answer 1

The big silver coin with 20 is 20 cent coin and ther other is a 5 cent coin. Our dollars are gold coins and our silver coins are cents.. hoped that helped :)

Answer 2

The biggest coin in Australia, (in worth) is the $2 coin, so the 20 and 5 should be cents.

http://en.wikipedia.org/wiki/Coins_of_the_Australian_dollar