The number system
Expressions and Equations
Proportional relationships
Other math stuff
100

The distance a number is from 0 on the number line

Absolute value

100

The number or variable used to multiply a variable in a term, in the example 3x +5, it is the 3

Coefficient

100

A ratio comparing an amount to one

Unit rate

100

In a rectangle, it is equal to length x width

Area

200

A factor that two or more numbers have in common

Common factor

200

A statement using an equal sign showing that two expressions have the same value

Equation

200

Two equal ratios, or comparing equivalent fractions

Proportion

200

A color that ends in -urple

Purple

300

Non-repeating, non-terminating decimals

Irrational numbers

300

The property that states that multiplying a sum by a number is the same as multiplying each addend by the number and then adding the products. 

A x (B + C) = AB + AC

Distributive Property

300

A percentage of sales paid to a salesperson

Commission

300

In a square, it is equal to 4 times the length of each side

Perimeter

400

The whole numbers and their opposites

Integers

400

A statement that two values are not equal

Inequality

400

Same as unit rate, or the rate at which two sets of numbers change

Constant of proportionality

400

Can be written as 1 in :5 mi, 1 in= 5 mi, or 1/5 and describes how a scale model is related to the original object

Scale

500

The number obtained by dividing one quantity by another

Quotient

500

A symbol that stands for an unknown number

Variable

500

Comparison of two quantities

Ratio

500

The constant of proportionality that tells you how many times smaller or larger an object is that is proportional to another object.  Can be found using scale.

Scale factor