Holt Alegebra 1 Chapter 1 Vocabulary

Algebraic Expression

An expression that contains at least one variable.

Numerical Expression

An expression that contains only numbers and operations.

Absolute Value

The absolute value of x is the distance from zero on the number line.

Power

An expression written with a base and an exponent or the value of such an expression.

Reciprocal

Fir a real number, the reciprocal of a is 1/a.

Like Terms

Terms with the same variables raised to the same exponent.

Terminating Decimals

decimals that terminate.

Natural Number

A counting number.

Integer

A member of the set of whole numbers and their opposites.

Coefficient

A number multiplied by a variable.

Rational Numbers

A number that can be written in the form of a fraction.

Square Root

A number that is multiplied to itself to form a product is called a square root.

Perfect Square

A number whose positive square root is a whole number.

Term

A part of an expression to be added or subtracted,

Real Number

A rational or irrational number. Every point on the number line represents a real number.

Irrational Numbers

A real number that can cannot be written as a ratio of integers.

Order of Operations

A rule for evaluating expressions.

Variable

A symbol used to represent a quantity that can change.

Constant

A value that can change.

Integers

Are what whole numbers and their opposites.

Repeating Decimal

Rational numbers in decimal from that have a block of one or more digits that represents continuously.

Base

The number in a power that is used as a factor.

Exponent

The number that indicates how many times the base in a power is used as a factor.

Opposite

The opposite of a number is the number is the same distance from zero on the number line.

Additive Inverse

The opposites of a number. Two numbers whose sum is zero.

Multiplicative Inverse

The reciprocal of a number.

Whole Number

The set of natural numbers and zero.

Evaluate

To find the value of an algebraic expression by the substituting a number for each variable and simplifying by using the order of operations.