Question

which statement best describes the significance of the number 10 in the metric system?
there are 10 base units.
there are 10 metric prefixes.
the system is based on multiples of 10.
the system is used by 10 countries.

2
multiple choice 1 point
which mathematical operation is most closely associated with the function of a metric prefix?
addition
multiplication
subtraction
exponentiation

3
multiple choice 1 point
which unit is best suited for measuring the volume of a test tube?
milliliter
liter
dekaliter
kiloliter

Explanation:

1.

The metric system is a decimal - based system, which means it is based on multiples of 10. For example, 1 meter = 10 decimeters, 1 decimeter = 10 centimeters, etc. There are not 10 base units (the International System of Units has 7 base units), there are more than 10 metric prefixes (e.g., deci -, centi -, milli -, kilo -, mega -, etc.), and it is used by many more than 10 countries.

A metric prefix changes the value of a unit by multiplying it. For example, “kilo -” means multiply by \(10^{3}\), “milli -” means multiply by \(10^{- 3}\). Addition, subtraction, and exponentiation (in a non - multiplication sense for the basic function of a prefix) are not the main operations associated with metric prefixes.

A test tube has a relatively small volume. A liter is a larger unit (1 liter = 1000 milliliters). A dekaliter (\(1\space daL=10\space L\)) and a kiloliter (\(1\space kL = 1000\space L\)) are even larger. Milliliters are more appropriate for measuring the small volume of a test tube.

Answer:

The system is based on multiples of 10.

2.