Patient Care Technician (PCT) AAH Practice Exam

Which metric unit is equivalent to one hundredth of a meter?

1. Millimeter

2. Meter

3. Centimeter

4. Decimeter

The correct answer is: Centimeter

One hundredth of a meter is defined as a centimeter. The metric system is based on powers of ten, where each unit can easily convert to another. In this case, one meter is equivalent to 100 centimeters, meaning that when you divide one meter by 100, you are left with one centimeter. This unit of measurement is commonly used in everyday contexts, such as measuring height or the dimensions of objects in a way that is practical and easily understood. Understanding these metric conversions is essential in fields like patient care, where precise measurements may be needed for medication dosages, equipment settings, or patient assessments. The other options represent different measurements where one millimeter equals one-thousandth of a meter, one meter is a full meter, and one decimeter equals one-tenth of a meter, illustrating how they do not match the definition of a hundredth of a meter.