The children must be able to count money to $1.00. We have been using our touch money system in class that allows the children to count by 5's. They are getting better at this everyday. Please have your son/daughter count money for a couple of minutes everyday. You could give them a pile of your change and ask them to count it. This will help in a huge way. Here is an internet game that allows them to do the same thing. Thanks!!
http://arcytech.org/java/money/money.html