How many 20 cent pieces make up 6.80?

Well, isn't that a lovely question! To figure out how many 20 cent pieces make up $6.80, we simply divide $6.80 by 0.20 (which is the value of a 20 cent piece). So, $6.80 divided by 0.20 equals 34. You would need 34 of those 20 cent pieces to make $6.80. Happy counting!