What is the Multiplicative Identity Property

Answer 1

Any number may be multiplied by the Multiplicative Identity (that is, 1) and remain the same (except for units).

It is used in Dimensional Analysis.

Example:

1 = (1 foot) / (12 inches) = (12 inches) / (1 foot) [use the one that allows units to cancel]

Jill is 60 inches tall. How many feet is that?

60 inches

(60 inches) * 1

(60 inches) * ( (1 foot) / (12 inches) )

(60)(1/12) feet

5 feet

60 inches = 5 feet