During my childhood, I was always confused between quarts and gallon. I always ask my mom how many quarts are in a gallon? and the answer was the same I already told you this yesterday. And the funniest things happen when some guest came to the house and ask me how many quarts in a gallon? and I look at my MoM.
I made this simple handy printable chart which will help you to convert quarts to gallons.