20 terms

ratio

a comparison of two quantities by division

rate

a ratio comparing two quantities with different kinds of units

unit rate

a rate that is simplified so that it has a denominator of 1

value of a ratio

ex: for the ratio A:B, the value of the ratio is the quotient A divided by B

equivalent ratios

ratios that express the same relationship between two quantities; ratios that have the same value

percent

a ratio that compares a number to 100; percent of a quantity is a rate per 100

associated ratios

ratios that are related in some way

double number line

a number line that shows a comparison of two sets of numbers; shows equivalent ratios

ratio table

a table listing pairs of numbers that form equivalent ratios

convert

to change the form of a ratio without changing its value

tape diagram

visual models that use rectangles to represent parts of a ratio

equation

a mathematical sentence showing that two expressions are equal

coordinate plane

a plane in which a horizontal number line and a vertical number line intersect at their zero point

x-axis

the horizontal line of the two perpendicular number lines in a coordinate plane

y-axis

the vertical line of the two perpendicular number lines in a coordinate plane

ordered pair

a pair of numbers used to locate a point on the coordinate plane

origin

the point of intersection of the x-axis and y-axis on a coordinate plane

part to part ratio

an example of this ratio is comparing red numbers to blue numbers

part to whole ratio

an example of this ratio is comparing green blocks to the total amount of blocks

simplifying

dividing each number in a ratio by the GCF