You use values, units and dimensions all the time:
A value is the numerical quantity. For example: 5.2
The units tell what that quantity represents. For example: 5.2 liters.
The dimensions are the measurable properties that the units represent. For example: a liter is a unit of volume (units are a specific example of a dimensional quantity).
Define and give examples of value, units, and dimensions in a given expression
Give some more examples of value, unit, dimension triplets.
In scientific apps. -> units play a central role in quantification!
Treat units as algebraic entities: