Ratio and Proportional Reasoning
Words Notation
"On a dog, the ratio of ears to noses is two to one." Expressed in words.
Double Number Line
A model of equivalent ratios on parallel number lines.
Coordinate Plane
A plane defined by the x-axis and y-axis. Can be used to graph equivalent ratios.
Unit Price
A price per unit or how much one of something would cost.
Unit Rate
A rate with a second term of 1. "kilometers per hour" is an example.
Rate
A ratio comparing quantities of different units. The quantities are arbitrary. 240 calories per 12 ounces is an example.
Fractional Notation
A ratio expressed like a fraction is expressed in _______.
Ratio
A relationship between two quantities.
Equation
A statement that ratios are equivalent. Contains an equal sign.
Ratio Table
A table of equivalent ratios.
Proportion
A word that describes equality or inequality of ratios. If ratios are equal, they can be called "in_______."
Percent
A word that means "rate per one hundred."
Odds Notation
This method of expressing a ratio used two numbers separated by a colon (:).
Tape Diagram
This uses rectangles to model the two quantities of a ratio. Also known as a strip diagram or bar model.