Grade 3 Key Vocabulary by Domain
Mathematics Key Vocabulary Chart
This list of terms and definitions combines expands the glossary found within the North Dakota Common
Core Standards. North Dakota teachers added terms that they deemed to be important to
understanding and implementing the standards within each grade.
Draft- NDTC August 2011
1
Grade 3 Key Vocabulary by Domain
Grade
Word or Phrase
Core Domain
3
algorithm
Operations and
Algebraic
Thinking
3
arithmetic patterns
Operations and
Algebraic
Thinking
3
Associative
Property of
Multiplication
Operations and
Algebraic
Thinking
3
Commutative
Property of
Multiplication
Operations and
Algebraic
Thinking
3
Distributive
Property of
Multiplication
Operations and
Algebraic
Thinking
divide
Operations and
Algebraic
Thinking
3
3
divisor
3
dividend
3
evaluate
3
fact family/related
facts
3
factor
3
Identity Property
of Addition
3
Identity Property
of Multiplication
3
is not equal to
Draft- NDTC August 2011
Operations and
Algebraic
Thinking
Operations and
Algebraic
Thinking
Operations and
Algebraic
Thinking
Operations and
Algebraic
Thinking
Operations and
Algebraic
Thinking
Operations and
Algebraic
Thinking
Operations and
Algebraic
Thinking
Operations and
Algebraic
Definition
Related Words
procedure,
compute, set up
Sequence of numbers in
which the difference
between any two
consecutive numbers is
the same.
Changing the grouping of
three or more factors
does not change the
product.
Changing the order of the
factors does not change
the product
When one of the factors
of a product is the sum,
multiplying each addend
before adding does not
change the product.
groups, set, ÷,
division, divisor,
dividend,
quotient
divide, quotient,
dividend
A number that is divided
by another number.
To find the value of a
mathematical expression
A group of related fact
that use the same
numbers
The whole numbers that
are multiplied to get a
product
If you add zero to a
number, the sum is the
same as the number
If you multiply a number
one the product is the
same as that number
Is not the same
as , ǂ
2
Grade 3 Key Vocabulary by Domain
3
multiple
3
multiply
3
order of operation
3
product
3
quotient
3
reasonableness
3
remainder
3
round a whole
number
3
Zero Property of
Multiplication
Grade
Word and Phrase
3
denominator
3
eighths
3
equivalent
fractions
Thinking
Operations and
Algebraic
Thinking
Operations and
Algebraic
Thinking
Operations and
Algebraic
Thinking
Operations and
Algebraic
Thinking
Operations and
Algebraic
Thinking
Operations and
Algebraic
Thinking
Operations and
Algebraic
Thinking
Operations and
Algebraic
Thinking
Operations and
Algebraic
Thinking
Core Domain
Number and
Operation
Fractions
Number and
Operation
Fractions
Number and
Operation
Fractions
3
numerator
Number and
Operation
Fractions
3
parentheses
Number and
Draft- NDTC August 2011
The operation of
repeated addition of the
same number
A set of rules that tells
the order in which to
compute
The answer to a
multiplication problem.
the answer to a division
problem
an answer that is based
on good number sense
In whole number division,
when you have divided
as far as you can without
using decimals, what has
not been divided yet is
called the remainder
To find the nearest ten,
hundred, thousand,(and
so on)
The product of any
number and zero is zero
Definition/ Related Words
The bottom number in a
fraction. It tells how many
equal parts are in a
whole. fraction, ratio
The parts you get when
you divide something into
eight equal parts
Fractions that have the
same value
The number written
above the line in a
fraction. It tells how many
equal parts are described
in the fraction, fraction,
ratio
Used in mathematics as
3
Grade 3 Key Vocabulary by Domain
Operation
Fractions
Number and
Operation
Fractions
Number and
Operation
Fractions
Core Domain
3
sixths
3
unit fraction
Grade
Word and Phrase
3
area
Measurement and
Data
3
elapse time
Measurement and
Data
3
gram
Measurement and
Data
3
kilogram
Measurement and
Data
3
liter
Measurement and
Data
3
mass
Measurement and
Data
3
perimeter
Measurement and
Data
3
square units
Measurement and
Data
3
time interval
3
volume(liquid)
3
yard
Measurement and
Data
Grade
Word and Phrase
Core Domain
3
congruent
Geometry
Draft- NDTC August 2011
Measurement and
Data
Measurement and
Data
grouping symbols in
operations. When
simplifying and
expression, the operation
within the parentheses
are preformed first.
The parts you get when
you divide something into
eight equal parts
A fraction that has one as
its numerator
Definition/ Related Words
The measure, in square
units, of the inside of a
plane figure. length,
width, 𝑢𝑛𝑖𝑡𝑠 2
The amount of time that
is past.(a time interval)
The standard unit of
mass in the metric
system.
A metric unit of mass
equal to 1000 grams
The basic unit of capacity
in the metric system, One
liter equals 1000
milliliters.
The amount of matter in
an object. Usually
measured by comparing
with an object of known
mass. While gravity
influences weight, it does
not affect math.
The distance around a
figure.
A unit, such square
centimeter or square
inch, used to measure
area.
A duration of a segment
of time(elapse time)
The number of cubic unit
it takes to fill a figure.
Customary unit of length
1yard=3 feet or 36
inches.
Definition/ Related Words
Having exactly the same
size and shape /
4
Grade 3 Key Vocabulary by Domain
3
end point
Geometry
3
line segment
Geometry
3
parallel lines
Geometry
3
parallelogram
Geometry
3
pentagon
Geometry
3
plane figure
Geometry
3
point
Geometry
3
polygon
Geometry
3
rectilinear figure
Geometry
3
rhombus
Geometry
3
scale on a graph
Geometry
3
side of a polygon
Geometry
3
tiling
Geometry
3
trapezoid
Geometry
3
translation
Geometry
Draft- NDTC August 2011
equivalent measure
A point at either end of a
line segment or a point at
one end of a ray.
A part of a line with two
end points.
Lines that are always the
same distance apart.
A quadrilateral with two
pairs of parallel and
congruent sides
A polygon that has five
sides
A two denominational
figure
The exact location in
space represented by a
dot.
A closed plane figure,
made by line segments.
A polygon where all
angles are equal
A quadrilateral with all
four side equal in length
The numbers that show
the units used on graph.
Any of the line segments
that form a polygon
A pattern of shapes
repeated to fill a plane.
The shapes do not
overlap and there are no
gaps.
A quadrilateral with one
pair of parallel sides and
one pair of sides that is
not parallel.
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