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Math Vocabulary
Math vocab to study for CSAP
35
Mathematics
4th Grade
02/28/2010

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Cards

Term
acute angle
Definition

An angle that is less than 90 degrees

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Term
area
Definition

The number of square units needed to cover a closed fligure.  Multiply L (length) x W (width)

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Term
capacity
Definition

the amount a container can hold

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Term
congruent
Definition

same size and same shape

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Term
denominator
Definition

The bottom number of a fraction that tells the number of equal parts in the whole.

2/3

Term
difference
Definition

The answer to a subtraction problem

 

Term
edge
Definition
a line segment where two faces of a solid figure meet
Term
equilateral triangle
Definition
All sizes of the triangle are equal length
Term
estimate
Definition
to find a number that is close to an exact number
Term
expanded notation/form
Definition
A way to write a number that shows the place value of each digit.  For example, 9,000 + 300 + 20 + 5
Term
face
Definition
The side of a 3D figure
Term
intersecting lines
Definition
Lines that cross but do not form a right angle
Term
median
Definition
The middle number when data is arranged in order
Term
mode
Definition
The number or numbers that occur most often in a set of data
Term
numerator
Definition
The top number of a fraction.  It tells the number of equal parts compared to the number of equal parts in a whole.
Term
obtuse angle
Definition
An angle that is greater than 90 degrees.
Term
ordered pair
Definition
A pair of numbers used to locate a point on a coordinate grid.  Example (3,5)
Term
commutative property
Definition
Changing the order of numbers does not change the sum or product.  Example, 3+5 / 5+3    3x5 / 5x3
Term
parallel lines
Definition

Lines that do not intersect

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Term
parallelogram
Definition

a quadrillateral with two pairs of opposite parallel lines.

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Term
perimeter
Definition

add all sides of a shape together

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Term
perpendicular lines
Definition

two lines which form right angles where they intersect

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Term
probability
Definition

the chance that an event will happen

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Term
product
Definition

the answer to a multiplication problem

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Term
quadrillateral
Definition

a four-sided shape

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Term
range
Definition

the difference between the greatest and least numbers in a set of data

 

Term
ray
Definition
part of a line that begins at a point and is endless in one direction
Term
rhombus
Definition

a quadrilateral with two pairs of parallel sides and all sides are the same length

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Term
right angle
Definition

an angle that is equal to 90 degrees



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Term
standard form
Definition

a way to write a numer that shows only its digits

ex. 9,325

Term
sum
Definition

answer to an addition problem

 2 + 2 = 4

Term

symmetry

Definition

a figure that can be folded along a line so that both parts match exactly.

 

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Term
trapezoid
Definition

A quadrilateral that has exactly one pair of parallel lines.

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Term
vertex
Definition

the point where two or more edges meet.  the corner.

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Term
volume
Definition

multiple L x W x H

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