# Math Flashcards

What is the orders of operations?

Parenthesis Exponents Multiplication Division Addition Subtraction

PEMDAS

When adding and subtracting fractions, you must have a common _______, then you can subtract the ______.

denominator; numerator

When adding mixed numbers, you can add the whole numbers then add the _____.

fractions

When subtracting mixed numbers, you must convert them into an ______ fraction.

improper

When multiplying fractions, you multiply the ______ and the ______.

numerator; denominator

When working with percentages, a percent = a _______ divided by a ______.

If you are looking for just a part, you multiply the ______ x the ______.

If you are looking for the whole, you put the ______ over the ______.

part/whole

whole x %

part/percent

When multiplying variables with exponents, these can be ______.

added

When you have exponents in a division problem, you ______ them.

subtract

When solving inequalities, such as > or

reversed

Area of shapes:

Triangle: Square: Rectangle: Trapezoid: Circle

Perimeter of a circle?

Triangle - 1/2bh Square - s^2 Rectangle - l x w Trapezoid - 1/2h (b1+b2) Circle - pie(r)^2 / Perimeter - 2(3.14)(r)

Surface area is found by the _______ of each face on the shape.

adding

Surface area of a:

Sphere

Cube

Cylinder

Right rectangular prism

sphere - 4/3(3.14)(r)^3

cube - s^3

Cylinder - 3.14(r)^2(h)

Right rectangular prism - Bh

Equation for the pythagorean theorem?

a2 + b2 = c2

Average of all the terms and divide by the number of terms

Mean

Middle number of the given set; the terms must be in order from highest to lowest

Median