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absolute value

The distance of a number from zero on a number line.


The way of describing the steepness of a line, ramp or hill. The ratio of rise to run.


The number of square units needed to cover a surface.


The distance around a polygon


A letter or symbol that stands for one or more numbers.


A number that is multiplied by another number to find a product.


The set of whole numbers and their opposites.


A mathematical expression which shows that two quantities are not equal.


A ratio comparing a number to 100.


One of two numbers whose product is 1. Also known as the multiplicative inverse of a number.


The product of any number and a whole number. The value obtained by repeated addition.

Order of Operations

The rules for performing operations in expressions with more than one operation.

like terms

Two or more terms that have the same variable raised to the same power.


A constant change in x that corresponds to a constant change in y, forming a straight line.


A mathematical phrase that combines operations, numbers, and/or variables.


A statement that two expressions have the same value.


An equation that states a rule or a fact.

distributive property

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(b+c)= ab+ac

rational numbers

Any number that can be written as a ratio, a/b where a and b are integers and b doesn't = 0.


The number of cubic units needed to fill a space.


To rewrite an expression as simply as possible.


The point where the x-axis and the y-axis intersect on the coordinate plane.


The point of a line or curve where it crosses the x-axis or y-axis.


A value that does not change.

irrational number

Any number that cannot be written as a ratio, repeating, or terminating decimal.


The number that is multiplied by the variable in an algebraic expression or equation.


The parts of an expression that are separated by an addition or subtraction sign.


a comparison of two numbers by division.


To find the value of a numerical or algebraic expression.

ordered pair

A pair of numbers used to locate a point on a coordinate plane.

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