Colorado CNA Practice Exam

To convert ounces to milliliters, what should the nursing assistant do?

1. Add 30 to the ounce value

2. Divide by 30

3. Multiply by 30

4. Multiply by 10

The correct answer is: Multiply by 30

To convert ounces to milliliters, one must use the common conversion factor where 1 ounce is approximately equal to 30 milliliters. Therefore, multiplying the number of ounces by 30 gives the equivalent volume in milliliters, making it the correct approach for this conversion. Converting ounces to milliliters accurately is vital in a healthcare setting, where precise medication dosages and fluid intake/output are essential for patient care. When understanding this conversion process, remember that multiplying by 30 directly provides the correct volume in milliliters. The other methods, like adding to or dividing the ounce value, do not yield accurate conversions, and multiplying by 10 would significantly underestimate the number of milliliters since 1 ounce is much larger than 10 milliliters.