Area of Circle

pi x r^2

Area of Square

s^2

Area of Rec.

lw

Area of Triangle

.5bh

Area of Parallelogram

bh

Circumference of Circ.

pi x d or 2**pi**r

Vol. of Prisms and Cylinders

area of base * height

Vol. of Pyr. and Cones

1/3**area of base ** height

Percent of Change

amt of change/orig. amt

Percent Proportion

is/of=%/100

Simple Interest

prt

Order of Operations

PEMDAS

Subtracting Integers

Keep, Change, Change

Equations

Have an equals sign ( = )

Expressions

Do NOT have an equals sign

Inequalities Exception

When you multiply/divide by a (-), you must flip the sign.

Probability

number of favorable outcomes/total possible outcomes