Like this study set? Create a free account to save it.

Sign up for an account

Already have a Quizlet account? .

Create an account

Area of a triangle

1/2 base x height

Area of a circle

Pi x radius squared

Circumference of a circle

pi x diameter

Pythagorean theorem

a^2 + b^2 = c^2 (c is hypotenuse)

Distance =

rate x time

whole number

a nonnegative number that is not expressed as a fraction or a decimal


a whole number or its opposite (number line)

Composite number

a number that has more than two factors

Order of operations

Parentheses, Exponents, Multiply/Divide, Add/Subtract (Please Excuse My Dear Aunt Sally)

Commutative Property

5 x 2 = 2 x 5
(5) (a) = (a) (5)
b + 3 = 3 + b

Associative Property

If parentheses can be moved to group different numbers in an arithmetic problem without changing the result, then the operation is associative. Addition and multiplication are associative.
2 + (3 + 4) = (2 + 3) + 4
2 (ab) = (2a) b

Distributive Property

5a + 5b = 5(a + b)
5(100 - 6) = (5 x 100) - (5 x 6)

Additive identity

The value that, when added to a number, does not change the number. For all integers, the additive identity is 0.
5 + 0 = 5

Multiplicative identity

The value that, when multiplied by a number, does not change the number. For all integers, the multiplicative identity is 1.
5 x 1 = 5

Multiplicative inverse

The number that, when multiplied by the number, gives you the multiplicative identity (1).
1/5 is the multiplicative identity of 5

Additive inverse

The number that, when added to the number, give you the additive identity (0).
The additive inverse of 3 is -3


Order does NOT matter


Order does matter

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions and try again


Reload the page to try again!


Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

Voice Recording