triangle that has three acute angles -...
Transcript of triangle that has three acute angles -...
Cobb County 4th Grade 1 2010-2011
Fourth Grade Vocabulary
acute angle
angle whose measure is greater than 0º and less than 90º
A
B C
acute triangle triangle that has
three acute angles
Cobb County 4th Grade 2 2010-2011
area model
x 6
198
33
associative property
grouping numbers in different ways resulting with the same product or sum
(32 + 48) + 56 = 32 + (48 + 56)
angle
two rays or line segments that share the same endpoint
Cobb County 4th Grade 3 2010-2011
36 + 48 + 52 = 36 + 52 + 48
two or more numbers added or multiplied in any order resulting in the same sum or
product
commutative property
method for locating points using a plane formed by two intersecting and perpendicular number lines called axes
coordinate system
cube rectangular prism with six
square faces
Cobb County 4th Grade 4 2010-2011
cylinder
3-dimensional object with two parallel circular bases
data information gathered; facts or figures
from which conclusions are drawn
decimal
number with one or more digits to the right of the decimal point
3.57
3.3cyl
inder
Cobb County 4th Grade 5 2010-2011
decimal point
symbol used to separate dollars and cents in money and the ones place from the
tenths place in decimals
3.57 $5.65
degree
unit used for measuring angles and temperatures
denominator
lower number of a fraction which tells how many parts are in the whole or in the group
3
5
Cobb County 4th Grade 6 2010-2011
diagonal line
line segment joining two non-adjacent vertices of a
polygon
distributive property 25 x 43
(20 x 40) + (20 x 3) + (5 x 40) + (5 x 3)
3 X 8 + 3 X 4 = 3 X (8 + 4)
dividend
the number that is to be divided in a division problem
21 ÷ 7 = 3
21 ÷ 7 = 3
567
Cobb County 4th Grade 7 2010-2011
divisor
7
the number that divides the dividend
21 ÷ 7 = 3
equilateral triangle
triangle that has 3 sides equal in length and 3 angles equal
in size
edges
line segments where two or more faces of a solid figure meet
Cobb County 4th Grade 8 2010-2011
two or more fractions that name the same amount
equivalent fraction
=
estimate find out about how many or how
much 36 is about 40
evaluate
= 1 + 9
= 10
find the value of a mathematical expression
Cobb County 4th Grade 9 2010-2011
expanded form
way to write numbers by showing the value of each digit
3000 + 400 + 20 + 7 = 3,427
expression + 23 – 14
mathematical phrase (part of the number sentence) that combines numbers and operation signs but does not have an equal sign (2+4)-5
face polygons that form flat surfaces
on a solid figure
Cobb County 4th Grade 10 2010-2011
factor
s numbers that are multiplied together
to find a product
4 X 6 = 24
full rotation
360°movement of a figure around a fixed point
gram
metric unit for measuring weight (mass)
Cobb County 4th Grade 11 2010-2011
half rotation
180°movement of a figure around a fixed point
1 100
hundredths
one hundred equal parts
37.76
improper fraction fraction in which the numerator is greater than or equal to the denominator
Cobb County 4th Grade 12 2010-2011
interpret
give the meaning of or explain
isosceles triangle triangle with 2 sides equal in length
and 2 angles equal in size.
kilogram
metric unit for measuring weight (mass)
Cobb County 4th Grade 13 2010-2011
like denominators fractions with denominators that
are the same 6 2
6 5
line straight path of points that has no
beginning or end
line graph graph that uses a line to show how data changes
over a period of time
Cobb County 4th Grade 14 2010-2011
line plot
graph that uses symbols above a number line to represent data
median middle score (or scores) when a set of scores are written in order of size
3
3
4
6
7
line segment
part of a line that includes two endpoints
G A
Cobb County 4th Grade 15 2010-2011
six places to the left of the ones place
million 3,000,000
mixed fraction
an amount given as a whole number
and a fraction 4
3
3
3
3
4
6
7
mode
the score that occurs most often in a set of scores
Cobb County 4th Grade 16 2010-2011
net
flat pattern that can be used to make a three-dimensional object
numerator
the top number of a fraction, which tells how many parts are being counted out of the total number of equal parts
multiple number that is the product of a given number
and a whole number
7 X 8 = 56 56 is a multiple of 7 and also 8
Cobb County 4th Grade 17 2010-2011
ordered pair pair of numbers used to locate a point on a coordinate grid
(2, 4)
obtuse angle angle whose measure
is greater than 90° and less than 180°
obtuse triangle
triangle that has one obtuse angle
Cobb County 4th Grade 18 2010-2011
ounce standard unit for measuring weight
parallel
lines in the same plane that never intersect and are always the
same distance apart
parallelogram
quadrilateral whose opposite sides are parallel
Cobb County 4th Grade 19 2010-2011
partial product
products when the ones, tens and hundreds are multiplied separately
38 X 9
54(6X9)
270(30X8)
324
perpendicular two lines or line segments that intersect to form right angles
graph that uses symbols to show data
pictograph
Key
= 2 cats
Sam
Sue
Cobb County 4th Grade 20 2010-2011
place value value of a digit according to its place in a number 7,382 the value of 7 = 7,000
plane
flat surface that extends indefinitely in
all directions
plane figure two-dimensional shape
Cobb County 4th Grade 21 2010-2011
polygon
closed plane figure formed by three
or more line segments and angles
point an exact location in
space
pound
customary unit of weight 1 lb = 16 oz
Cobb County 4th Grade 22 2010-2011
product
name given to the answer in a multiplication problem
or or
proper fraction fraction where the numerator is less than
the denominator
prism
triangular prism
rectangular prism
Cobb County 4th Grade 23 2010-2011
protractor tool for
measuring the size of an angle
pyramid has one base which gives the
pyramid its name, all other faces are triangles
quotient 28 ÷ 2 = 14
name given to the answer in a division problem
Cobb County 4th Grade 24 2010-2011
ray line which has a definite starting
point but no end
range difference between the least and
greatest value in a set of data
2, 4, 5, 6, 7, 7, 8, 9, 10, 10, 11
9
rectangular prism
solid figure in which all six faces are rectangles
Cobb County 4th Grade 25 2010-2011
rhombus parallelogram with all four sides
equal in length
remainder amount left over when a number cannot
be divided equally
43 ÷ 8 = 5 r 3
regular polygon
polygon with all sides and angles congruent
Cobb County 4th Grade 26 2010-2011
angle which forms a square corner; has a measure of 90°
right angle
right triangle
triangle with one 90° angle
rotation
movement of a figure to a new position by turning it around a vertex or point of
rotation
Cobb County 4th Grade 27 2010-2011
scalene triangle
triangle in which no sides are equal in length; no angles are equal in size
solid figure
3-dimensional figure
way to write numbers using the digits 0 - 9
352 4,672
standard form
Cobb County 4th Grade 28 2010-2011
straight angle
angle that measures 180°
symbol
word, picture, or number used instead of words
+ = __
tenths 546.6
ten equal parts 1
10
Cobb County 4th Grade 29 2010-2011
customary unit used to measure weight 1 T = 2,000 lbs
ton
trapezoid quadrilateral with exactly one
pair of parallel lines
trend changes in data over time
Cobb County 4th Grade 30 2010-2011
Venn diagram uses circles to show relationships among sets
vertex/vertices
point at which 2 or more straight lines meet
weight
how heavy or light an object is in numbers
Cobb County 4th Grade 31 2010-2011
x-axis horizontal line in a coordinate system
or on a coordinate plane
x
y y-axis vertical line in a coordinate system
or on a coordinate plane