Explain how place value could be used to find the difference of $4.23 and $2.75

I don't know if this is what you mean by your question but can be broken down by place value into 4, 0.20 and 0.03. 2.75 can be broken down into 2, 0.70, and 0.05. Then subtract the same place values from each and you will get 1.48