The fractions don’t help me when I go to the grocery store and unit price of one bag of nuts is “per pound” and the unit price of another is “per ounce”. You’d better be good at dividing by 16 in your head if you want to price-compare! And you’d better be good at remembering how many fluid ounces are in a quart when you go to the olive oil aisle (hint: it’s not 16).