Relating Measurements

A ratio of two equivalent measurements.
Ex: 1 inch=2.54 centimeters

• ratio

• unit rate

• conversion factor

• proportion

A rate in which the second quantity in the comparison is one unit

• ratio

• unit rate

• conversion factor

• proportion

To turn from one to another; to turn from one measurement system into another

• Convert

• Percent Decrease

• Rate

• Percent Increase

The relationship between a distance in yards (y) and the same distance in miles (m) is described by the equation y = 1760m. Find measurements in yards and miles for distances by completing the table. Is there a proportional relationship between a measurement in yards and a measurement in miles for the same distance? Explain why or why not.

• distance measured in miles	distance measured in yards
  1	1,760
  5	8,800
  2	3,520
  10	17,600

• There is a proportional relationship. The constant of proportionality is 1760 yards per mile.

Which of the following would most likely have a length of 30 feet?

• stick of gum

• envelope

• car

• pool

This is used to measure

• distance

• capacity

• weight

• length

This is used to measure

• time

• capacity

• weight

• length

We use ___ to measure how much milk is in a carton.

• litres

• gramms

• centimetres

• kilogramms

The height of a tree is measured in ___

• kilogramms

• centimetres

• millimetres

• metres