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8.1
expression
order of operations
scientific notation
rational numbers
variables
real number
evaluate
simplify
exponents
commutative properties
associative properties
distributive property
identity property
inverse property
multiplicative property of zero
identity elements
inverse elements
additive opposite
parentheses
braces
brackets
8.2
real numbers
rational numbers
irrational numbers
Venn diagram
natural numbers
counting numbers
whole numbers
integers
non-repeating decimals
non-terminating decimals
repeating decimals
8.3
percent
discount
rate of change
percent of change
ratio
proportion
rate
discount price
sales tax
simple interest
amount of discount
principle
8.4
expression
order of operations
algebraic expression
numerical expression
substitution
base
equivalent
evaluate
exponent
numerical coefficient
variable
8.5
perfect square
square root
approximate value
rational number
irrational number
8.6
congruent
adjacent
vertical angles
complementary angles
supplementary angles
protractor
verified
Grade 8 – Essential Vocabulary
8.7
surface area
volume
polyhedron
pyramid
cone
prisms
cylinder
two-dimensional
three-dimensional
Pi
faces
slant height
base
length
radius
diameter
circumference
8.8
transformation
translation
reflection
rotation
dilation
reflected image
original figure
center of rotation (vertex)
scale factor
similar figure
corresponding sides
line of reflection
reference point
translated image
angle of rotation
rotated image
proportional
tessellations
8.9
three-dimensional model
surface area
volume
8.10
Pythagorean Theorem
hypotenuse
leg
Pythagorean triples
right triangle
8.11
probability
prediction
independent event
dependent event
odds
ratio
unfavorable outcomes
favorable outcomes
occurrence
sample space
8.12
comparisons
predictions
inferences
stem-and-leaf plot
scattergrams
box-and-whisker plot
lower quartile
lower extreme
median
upper quartile
upper extreme
range
interquartile range
line graph
bar graph
circle graph
picture graph
histogram
frequency distribution
intervals
mean
mode
Grade 8 – Essential Vocabulary
8.13
matrix
rows
columns
8.14
relation
function
functional relationship
table of values
linear equation
ordered pairs
domain
range
x-coordinate
y-coordinate
output
input
8.15
equation
inequality
verified
solve
solution set
8.16
linear equation
ordered pairs
axes
coordinate plane
x-axis
y-axis
origin
quadrant
8.17
verbal expression
mathematical expression
proportion
ratio
extremes of the proportion
means of the proportion
function
formula
8.18
domain
range
independent variable
dependent variable
table of values
function notation – f(x)
8.19
slope
rise
run