Susan\textquotesingle s bus fare is exactly $$44\text{p}$$, If the driver can give her change, what is the smallest number of coins that can change hands when Susan pays to get on the bus? (Explain clearly)  Answer~\uline{~~~~~~~~~~}~ 
Overseas Competition->Knowledge Point->Calculation Modules->Whole Numbers->Whole Numbers Addition and Subtraction ->Subtraction of Whole Numbers->Subtraction in Horizontal Form