Posted by dk on .
how can the clerk make the change of the $1 bill using the fewest number of coins?

4th grade 
Ms. Sue,
Two 50cent pieces.
Is there more to this problem? 
4th grade 
dk,
in book one side they say carlo had to buy on can of food because he ran out. he went to the store and bought a $0.79 can of food. he paid with a $ 1 bill. how much change did he get? ( this is different one in one question they put 5 parts in one question)
this answer is $0.21 left 
4th grade 
dk,
no

4th grade 
Ms. Sue,
What is the least number of coins that make up $0.21?