USDA guidelines count 1 cup (8 fluid ounces) as a serving. There are 16 cups in a gallon. Countries other than the US may have different official guidelines.
A portion is different from a serving and is usually defined as what would be a reasonable amount to consume at one meal. A child may drink a single serving at a meal but a teenager or adult may consume 2 servings in order to consume enough nutrients for the day. It's important to consider how much your family typically consumes if you're planning meals or making a grocery list.
There are 16 cups in a gallon of milk. Divide 16 by 0.75 (three quarters) to find out how many three-quarter cup servings are in a gallon of milk. The answer is 21.33, so there are approximately 21 three-quarter cup servings in a gallon of milk.
16
1/2 gallon = (64 fl oz) / (4 fl oz per serving) = 16 servings
A half gallon has 64 fluid ounces total, so to divide it into 4-ounce servings, you would divide 64/4. So there are 16 servings
16
64 fl oz / 4 fl oz = 16 servings
It would have to be under 16. Eight ounces is considered a serving of water, and there are 128 ounces in a gallon. That divides out to 16 servings. Now, milk has fat, protein, and vitamins in it, not just water, so you would have to get at least a little less water than 16 servings.
16 8-ounce servings per gallon. (1 gallon is 128 fl oz.)
16
1 gallon = 128 fluid ounces.Number of servings = (128 / 0.17) = 752.94 (rounded).752 full servings, plus not quite one more.
32
16