Rates in Time

Front

rate

Back

A ratio that compares two quantities with different units (e.g., miles per hour).

Front

unit rate

Back

A rate where the second quantity is one unit (e.g., 60 miles per 1 hour).

Front

ratio

Back

A comparison of two quantities (e.g., 3 apples to 4 oranges).

Front

proportion

Back

An equation stating that two ratios are equal (e.g., 32=64).

Front

per

Back

A word that means "for each" or "for every."

Front

speed

Back

A specific type of rate that compares distance to time.

Front

equivalent ratios

Back

Ratios that have the same value or represent the same relationship (e.g., 1:2 and 2:4).

Front

constant

Back

A speed that does not change over a period of time.

Front

Double number line

Back

A visual model using two parallel number lines to show equivalent ratios.

Front

ratio table

Back

A table used to organize and find equivalent ratios.