How many 10-ounce glasses can a half-gallon bottle of milk fill?

Here's how to figure that out:

* Convert gallons to ounces: A gallon has 128 ounces, so a half-gallon has 128 / 2 = 64 ounces.

* Divide total ounces by glass size: 64 ounces / 10 ounces/glass = 6.4 glasses.

You can fill approximately 6 full 10-ounce glasses with a half-gallon of milk.