6th Grade Math Vocabulary
Quadrant
One of four sections of the coordinate plane defined by the intersection of the horizontal and vertical axes.
Counting Numbers
The numbers used to count; the members of the set {1,2,3,4,5,...}. Also called natural numbers.
Line Plot/Dot Plot
a diagram that shows the frequency of data on a number line
histogram
a graph with touching bars above intervals
cluster
a grouping of data together in one area
variable
a letter or symbol that represents an unknown quantity
edge
a line segment formed by the intersection of two faces
numerical expression
a mathematical phrase that contains numbers and operational symbols
inequality
a mathematical sentence that contains <, >, ≠, ≥, or ≤
equation
a mathematical sentence that contains an equal sign
range
a measure of variability found by subtracting the largest and smallest values
mean absolute deviation MAD
a measure of variability that describes how much the data values are spread out from the mean
prime factorization
a number expressed as a product of primes
prime number
a number greater than 1 with only two factors, 1 and itself
power
a number that can be written using exponents
exponent
a number that shows how many times the base should be multiplied
term
a number, a variable, or the product of a number and one or more variables
base of a prism
a pair of parallel polygonal faces that are the same shape and size
vertex of a solid
a point where three or more edges meet
kite
a quadrilateral with two pairs of adjacent sides that are equal in length
unit rate
a rate in which the comparison is to 1 unit
percent
a ratio that compares a number to 100
formula
a rule that uses variables to relate two or more quantities
rate
a special type of ratio that compares quantities with unlike units of measure
frequency table
a table that shows the number of times of a value or values
net
a two-dimensional pattern that can fold to make a three-dimensional figure
unit price
a unit rate that gives the price of one item
composite number
a whole number greater than 1 with more than two factors
interquartile range IQR
the difference between the first and third quartiles
box plot
the distribution of data set by 5 boundary points along a number line; separates data into 4 sections
greatest common factor (GCF)
the greatest number that is a factor of all numbers
mode
the item(s) that occur the most frequently
equivalent ratios
ratios that express the same relationship
substitution
replace a variable with a number to evaluate an expression
estimate
rounding numbers or decimals that are easier to mentally add, subtract, multiply or divide
evaluate
solve the problem
Positive Integer
Any integer with a + symbol in front and greater than zero.
Negative Integer
Any integer with a − symbol in front and are less than zero.
sales tax
tax added to the price of goods and services
like terms
terms that have identical variable parts
quotient
the answer to a division problem
product
the answer to a multiplication problem
difference
the answer to a subtraction problem
sum
the answer to an addition problem
Measures of Variability (types)
1. Range 2. Mean Absolute Deviation (MAD) 3. Interquartile Range (IQR)
Measures of Center (types)
1. mean 2. median. 3. mode
Rational Number
A number that can be written in the form a/b or -a/b, where "a" is a whole number and "b" ≠ 0. Examples: 29, ¾, 0.78
Coordinate Plane
A plane that is divided into four regions by a horizontal line (x-axis) and vertical line (y-axis).
Integer
All whole numbers (both positive and negative) and zero.
ratio
A relationship in which for every x units of one quantity there are y units of another quantity.
polyhedron
A three-dimensional figure with faces that are polygons
discount
The amount by which the regular price of an item is reduced
Absolute Value
The distance between a number and zero; can never be negative
x-axis
The horizontal axis that passes through the origin.
y-axis
The vertical axis that passes through the origin.
Origin
This is the point where the number lines of the coordinate plane intersect. It is at the point, (0,0).
Opposites
Two numbers that are the same distance from zero on a number line but in opposite directions. For example 6 and -6.
simplify
combine like terms of an expression
outlier
data a lot smaller or larger than the other pieces of data
quartile
dividing the data set into four parts
mean
find the sum of the data values, then divide by the number of pieces of data
face
flat surface in the shape of a polygon
perpendicular
intersecting lines that form a right angle
percent proportion
is/of = %/100
algebraic expression
mathematical phrase that consists of variables, numbers, and operational symbols
volume
number of cubic units needed to fill a solid shape
area
number of squares needed to fill a polygon
inverse operations (relationship)
operations that undo each other
parallelogram
polygon with opposites sides parallel and congruent
least common multiple (LCM)
the least multiple, besides zero, shared by all of the numbers
median
the middle of a set of numerical data
coefficent
the number part of a term that contains a variable
base
the number that is repeatedly multiplied in exponential form
addends
the numbers that add together to make a sum
bases
the top and bottom of a prism
Division Property of Equality
the two sides of an equation stay equal when both sides of the equation are divided by the same nonzero number
Multiplication Property of Equality
the two sides of an equation stay equal when both sides of the equation are multiplied by the same number
Addition Property of Equality
the two sides of an equation stay equal when the same amount is added to both sides of the equation
Subtraction Property of Equality
the two sides of an equation stay equal when the same amount is subtracted from both sides of the equation
Ordered Pair
two numbers used to locate a point on a coordinate plan listed in a specific order (x,y)