Unit One: Math

Integer

A number belonging to the set made up of the whole numbers and their opposites

Whole Number

A number belonging to the set made up of zero and the natural numbers.

Term

A number or a variable or the product of a number and variables.

rational number

A number that can be written as a ratio in fraction form.

Real Number

A number which can be written as a infinite decimal

Constant

A number; a term containing no variables to state a rule

Formula

An expression that uses variable or the product of a number and variables.

Repeating Decimal

A decimal who digits to the right of a decimal point repeat indefinitely.

Natural Number

A number belonging to the set made up of the numbers that are used to count 1,2,3, and so on.

Variable

A letter or symbol used to represent an unknown number.

Expression

One term or multiple terms connected by an addition or subtraction sign.

Opposite Numbers

The distance from zero on the number line

Absolute value

The number of units between two numbers or points regardless of direction

Distance

Two numbers that are the same distance from zero on the number line but in opposite directions

terminating decimal

a decimal that ends

vinculum

a horizontal bar used in mathematical notation; in fractions, it is the bar that separates the numerator from the denominator; in repeating decimals, it indicates a group of repeating numbers

irrational number

a number that, when in decimal form, does not terminate or repeat

commutative property

a property of the number which states that the order in which numbers are added or multiplied does not change the value

associative property

a property of the real numbers which states that how numbers are grouped in the sum or product does not change the value

ellipsis

a set of three dots at the end of a number used to indicate that the number will infinitely continue in the same pattern

distributive property

a(b+c)=ab= ac or a(b-c)= ab- ac

Infinite

increasing or decreasing without end

inequality

sentence showing a relationship between numbers that are not necessarily equal; uses the symbols >,<, greater than or equal to, less than or equal to, not equal to.

additive identity

the number 0; when added to any number, the value of the number does not change

multiplicative identity

the number1; when multiplied by any number, the value of the number does not change

additive inverse

the opposite or negative of a number; the sum of a number and its additive inverse is 0

multiplicative inverse

the reciprocal of the number; the product of a number and its multiplicative inverse is 1