NET

Can be folded into a Rectangular Prism

COORDINATE PLANE

VOLUME

AREA Squares & Rectangles W

Area = Length x Width

H

L

W

Parallelograms

B

H

Volume = Base x Width x Height

Area = Length x Height L

Triangles

SURFACE AREA

H

Area = Length x Height 2

L Circles

Find the Area of Each side and add them together.

r

Area = π r

2

Surface Area = Top + Bottom + Front + Back + Side 1 + Side 2

PERIMETER

CIRCUMFERENCE S

S

S

D S

S

S S

Perimeter = ADD all the sides

Circumference = πD or π2r

 

RATIOS AND PROPORTIONS Comparing two sets of items. Written with “to”, “:”, and as a “fraction”. *** Always remember to simplify into smallest terms *** ★★★★★¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢ For every 1 star there are 3 circles. 5:15 = 1:3

UNIT RATE “For each” “How Much is One” “Rate of” “Per” Set up a proportion – cross multiple or find the pattern $ Cost $ = $ Cost $ # of items 1 item

Time = Time # #

Fraction, Decimal, Percent

F %  /  100  

Divide  

Rate in tables = Find the pattern

D

X  100  

%

PERCENT OF QUANTITY % / 100

25% = 25/100 = .25

Ex. 30% = 30/100

VARIABLES EQUIVALENT EXPRESSIONS Combine Like Terms, Distribute 3 (2 + x) = 6 + 3x y + y + y = 3y

Represent an unknown number You can SOLVE for a variable by performing the opposite operation 10 + x = 15 15 – 10 = 5 x=5

24x + 18y = 6 (4x + 3y) 3x + 4y + 2x – 1y = 5x + 3y

33

11y = 33 11 = 3 y = 3