How can we help?

You can also find more resources in our Help Center.

variable

a letter which stands for a number

expression

any combination of numbers, variables,operations and grouping symbols

value

the number that a variable stands for

evaluate

to find the value of an expression when the value of the variables are known

substitute

to replace a variable, term, or expression with an equivalent variable, term or expression

power

repeated multiplication by the same factor

base

the repeated factor in a power

exponent

the number of times that the base is repeated

area of a square

s=side length

A=s squared

units will be squared

A=s squared

units will be squared

volume of a cube

s=side length

v=s cubed

units will be cubed

v=s cubed

units will be cubed

order of operations

Parentheses

Exponents

Multiplication

Division

Addition

Subtractions

Exponents

Multiplication

Division

Addition

Subtractions

integers

the set of positive and negative, whole numbers, also zero

absolute value

the distance between a number and zero on the number line

additive inverses/opposites

-numbers with same absolute value but different signs

-when added together, their sum is zero

-when added together, their sum is zero

inverse property of addition

a+(-a)=0

any number plus its opposite equals zero

any number plus its opposite equals zero

definition of subtraction

a-b=a+(-b)

subtraction is the same as adding the opposite of a number

subtraction is the same as adding the opposite of a number

multiplication property of one

-1*a=-a

any number multiplied by negative one equals its opposite

any number multiplied by negative one equals its opposite