Half an ounce is how many milliliters?

Half an ounce is how many milliliters?

• A. 15 mL
• B. 30 mL
• C. 7.5 mL
• D. 5 mL

Answer: (A)

Converting fluid ounces to milliliters is the idea here. A fluid ounce is about 30 mL, so half of that is roughly 15 mL. If you use the exact figure, 1 fl oz = 29.5735 mL, so half is 14.78675 mL, which rounds to about 14.8 or 15 mL in practice. That’s why the right answer is about 15 mL. The other numbers don’t fit: 30 mL would be a full ounce, 7.5 mL would be a quarter-ounce, and 5 mL is even smaller.

Converting fluid ounces to milliliters is the idea here. A fluid ounce is about 30 mL, so half of that is roughly 15 mL. If you use the exact figure, 1 fl oz = 29.5735 mL, so half is 14.78675 mL, which rounds to about 14.8 or 15 mL in practice. That’s why the right answer is about 15 mL. The other numbers don’t fit: 30 mL would be a full ounce, 7.5 mL would be a quarter-ounce, and 5 mL is even smaller.