Fourth Grade
Mathematics
Vocabulary
Created by Carrie Schoenfelder
Staff Development Teacher
Strawberry Knoll Elementary School
Grade 4 ~ Carrie Schoenfelder ~ 2004
an angle that has a measure
less than a right angle (less than 90°)
acute angle
Grade 4 ~ Carrie Schoenfelder ~ 2004
mean
median
mode
a measure used to describe data
central tendency
Grade 4 ~ Carrie Schoenfelder ~ 2004
a graph the shows how parts of the
data are related to the whole and to
each other
circle graph
Grade 4 ~ Carrie Schoenfelder ~ 2004
E
G
H
F
line EF intersects line GH
lines that cross at exactly one point
intersecting
lines
Grade 4 ~ Carrie Schoenfelder ~ 2004
10
Spelling Test Progress
9
8
7
6
5
4
3
2
1
Jan
Feb
Mar Apr
May June
a graph that uses a line to show
how data change over a period of time
line graph
Grade 4 ~ Carrie Schoenfelder ~ 2004
X
0
X
X
1
X
X X
X X
2
3
X
X
X
X
X
X
X
4
5
6
Cookies Eaten at a Party
One X
shows
that one
student ate
six cookies
Numbers
show the
number of
cookies
a graph that shows the frequency
of data along a number line
line plot
Grade 4 ~ Carrie Schoenfelder ~ 2004
A
B
line segment AB or line segment BA
a part of a line that includes two
points called endpoints and all the
points between them
line
segment
Grade 4 ~ Carrie Schoenfelder ~ 2004
the mean of 74, 91, 63, 92, & 85 is
74
91
63
92
+85
405
number
of
addends
81
5 405
40
05
5
0
the number found by dividing the sum of a
set of numbers by the number of addends
Grade 4 ~ Carrie Schoenfelder ~ 2004
81
the median of 1, 3, 4, 6, & 7 is
4
1, 3, 4, 6, 7
median
the middle number or the average
of the two middle numbers in an
ordered set of data
Grade 4 ~ Carrie Schoenfelder ~ 2004
Millions Thousands
Ones
Ones
Tens
Hundreds
Ones
Tens
Hundreds
Ones
Tens
Hundreds
1, 0 0 0, 0 0 0
1,000 thousands; written as
1,000,000
Grade 4 ~ Carrie Schoenfelder ~ 2004
the mode of 1, 3, 4, 4, & 6 is
4
1, 3, 4, 4, 6
4 occurs most often
the numbers or items that occur most
often in a set of data
Grade 4 ~ Carrie Schoenfelder ~ 2004
an angle whose measure is greater than a
right angle
obtuse angle
Grade 4 ~ Carrie Schoenfelder ~ 2004
lines in a plane that never intersect
parallel lines
Grade 4 ~ Carrie Schoenfelder ~ 2004
a quadrilateral whose opposite sides are
parallel and congruent
parallelogram
Grade 4 ~ Carrie Schoenfelder ~ 2004
DO
FIRST
4 + (12 + 4) – 3
the symbols used to show which operation
or operations in an expression should be
done FIRST
parentheses
Grade 4 ~ Carrie Schoenfelder ~ 2004
two lines that intersect to form four right
angles
perpendicular
lines
Grade 4 ~ Carrie Schoenfelder ~ 2004
a flat surface that extends without end
in all directions
Grade 4 ~ Carrie Schoenfelder ~ 2004
A
point A
an exact location in space usually
represented by a dot
Grade 4 ~ Carrie Schoenfelder ~ 2004
a polygon with four sides
quadrilateral
(quadrangle)
Grade 4 ~ Carrie Schoenfelder ~ 2004
radius
a line segment with one endpoint at the
center of a circle and the other endpoint
on the circle
Grade 4 ~ Carrie Schoenfelder ~ 2004
Heights of Fourth Graders
49
I
50
II
51
III
52
II
53
IIII
54
II
55
I
greatest
number
55
least
number
range
49 = 6
the difference between the greatest number
and the least number in a set of data
range
Grade 4 ~ Carrie Schoenfelder ~ 2004
Ray CD
C
D
a part of a line, with one endpoint, that
continues without end in one direction
Grade 4 ~ Carrie Schoenfelder ~ 2004
a parallelogram with four congruent sides
Grade 4 ~ Carrie Schoenfelder ~ 2004
a quadrilateral with one pair of
parallel sides
trapezoid
Grade 4 ~ Carrie Schoenfelder ~ 2004
analyze
Grade 4 ~ Carrie Schoenfelder ~ 2004
(2 x 3) x 4 = 2 x (3 x 4)
6 x 4 = 2 x 12
24 = 24
the property that states that the way
addends are grouped or factors are
grouped does not change the sum or the
product
associative
Grade 4 ~ Carrie Schoenfelder ~ 2004
35 ÷ 5 = 7
The dividend is 35
the number that is to be divided in
a division problem
dividend
Grade 4 ~ Carrie Schoenfelder ~ 2004
18 ÷ 3 = 6
6
3 18
The divisor is 3.
the number that divides the dividend
divisor
Grade 4 ~ Carrie Schoenfelder ~ 2004
10
X1
10
10 10 10
X2 X3 X4
20 30 40
multiples of 10
the product of a given whole number
and another whole number
multiple
Grade 4 ~ Carrie Schoenfelder ~ 2004
equation example
2x – 7 = 9
inequality example
3x – 1 < 4
~a sentence that contains one or
more variables
~can be an equation or an inequality
open
sentence
Grade 4 ~ Carrie Schoenfelder ~ 2004
( 12 + 4 ) - 3
16 - 3
13
the symbols used to show which
operation or operations in an
expression should be done first
parentheses
Grade 4 ~ Carrie Schoenfelder ~ 2004
3 r4
5 19
15
4
the amount left over when a
number cannot be divided equally
remainder
Grade 4 ~ Carrie Schoenfelder ~ 2004
function
Grade 4 ~ Carrie Schoenfelder ~ 2004
7+n
variable
Find 7 + n if n = 5
7+n
7+5
12
a letter or symbol that stands
for a number or numbers
variable
Grade 4 ~ Carrie Schoenfelder ~ 2004
Probability of an event
=
Number of favorable outcomes
Number of possible outcomes
Probability of yellow =
1
4
the likelihood that an event will happen
probability
Grade 4 ~ Carrie Schoenfelder ~ 2004
Pants
Shirts
Choices (Outcomes)
Blue
Red
Green
White
blue pants with red shirt
blue pants with green shirt
blue pants with white shirt
Tan
Red
Green
White
tan pants with red shirt
tan pants with green shirt
tan pants with white shirt
so, there are 6 possible outcomes
an organized list that shows all
possible outcomes for an event
tree diagrams
Grade 4 ~ Carrie Schoenfelder ~ 2004
any fraction whose numerator
and denominator are whole
numbers
common
fraction
Grade 4 ~ Carrie Schoenfelder ~ 2004
decimal
fraction
Grade 4 ~ Carrie Schoenfelder ~ 2004
a fraction with a value greater than 1 or less
than –1 which is not written as a mixed number
improper
fraction
Grade 4 ~ Carrie Schoenfelder ~ 2004
a number represented by a whole
number and a fraction
mixed number
Grade 4 ~ Carrie Schoenfelder ~ 2004
having the same value or naming the same amount
equivalent
units
Grade 4 ~ Carrie Schoenfelder ~ 2004
60 seconds = 1 minute
a small unit of time
Grade 4 ~ Carrie Schoenfelder ~ 2004
=
equivalent
fractions
Grade 4 ~ Carrie Schoenfelder ~ 2004
clockwise
Grade 4 ~ Carrie Schoenfelder ~ 2004
combination
Grade 4 ~ Carrie Schoenfelder ~ 2004
communicate
Grade 4 ~ Carrie Schoenfelder ~ 2004
a tool used to construct circles
compass
Grade 4 ~ Carrie Schoenfelder ~ 2004
conclude
Grade 4 ~ Carrie Schoenfelder ~ 2004
counter
clockwise
Grade 4 ~ Carrie Schoenfelder ~ 2004
a measure in one direction
dimension
Grade 4 ~ Carrie Schoenfelder ~ 2004
Formula for area of a rectangle
Area = length times width
Or
A=LXW
a set of symbols that expresses a
mathematical rule
formula
Grade 4 ~ Carrie Schoenfelder ~ 2004
0.01 or _1_
100
one of one hundred equal parts
hundredths
Grade 4 ~ Carrie Schoenfelder ~ 2004
-1 0 1 2
numbers less than zero
Grade 4 ~ Carrie Schoenfelder ~ 2004
place value
period
Grade 4 ~ Carrie Schoenfelder ~ 2004
-1 0 1 2
numbers more than zero
positive
Grade 4 ~ Carrie Schoenfelder ~ 2004
(5,1) (10,2)
(15,3) (20,4)
(25,5)
a set of ordered pairs
relationship
Grade 4 ~ Carrie Schoenfelder ~ 2004
the figure formed by flipping a
geometric figure over a line of
reflection to obtrain a mirror image
reflection
Grade 4 ~ Carrie Schoenfelder ~ 2004
the turning of a figure about a fixed point
rotation
Grade 4 ~ Carrie Schoenfelder ~ 2004
0.1 or _1_
10
one of ten equal parts
Grade 4 ~ Carrie Schoenfelder ~ 2004
the movement of a figure, either a
translation, rotation, or reflection
transformation
Grade 4 ~ Carrie Schoenfelder ~ 2004
the action of sliding a figure in any
direction
translation
Grade 4 ~ Carrie Schoenfelder ~ 2004
Grade 4 ~ Carrie Schoenfelder ~ 2004