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Math MCAS 4th Grade Vocabulary 2
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Terms in this set (60)
acute angle
an angle that has a measure less than a right angle (less than 90 degrees)
area
the number of square units needed to cover a surface
array
an arrangement of objects in rows and columns
bar graph
a way to show information that uses bars to stand for data
capacity
the amount a container can hold when it is filled
circle graph (pie chart)
a graph in the shape of a circle that shows data as a whole made up of different parts
closed figure
a shape that begins and ends at the same point
congruent
having the same size and shape
data
information collected about people or things from which conclusions may be drawn
decimal point
the mark in a decimal number that separates the ones and the tenths place
denominator
the part of a fraction that tells how many equal parts are in a whole (on the bottom of the fraction)
difference
the answer to to a subtraction problem
digit
any of one of the ten symbols 0, 1, 2, 3, 4, 5, 6, 7, 8, or 9 used to write numbers
edge
the line made where two or more faces of a solid figure meet
equilateral triangle
a triangle with three congruent sides
equivalent
having the same value or naming the same amount
estimate
to find an answer that is close to the exact answer
expanded form
a way to write numbers by showing the value of each digit 756=700+50+6
face
a polygon that is a flat surface of solid figure
factor
a number that is multiplied by another number to find a product
flip (reflection)
a movement of a figure to a new position by flipping the figure over a line
frequency
the number of times a response occurs
hexagon
a polygon with six sides and six angles
line graph
a graph that uses a line to show how data changes over a period
line plot
a graph that shows the frequency of data along a number line
line segment
a part of a line that has two endpoints
numerator
the part of a fraction that tells how many parts of the whole are being considered ( the number on the top of the fraction)
obtuse angle
an angle that has a measure greater than a right angle (greater than 90 degrees)
octagon
a polygon with eight sides and eight angles
parallel lines
lines that never intersect
parallelogram
a quadrilateral whose opposite sides are parallel and congruent
pentagon
a polygon with five sides and five angles
perimeter
the distance around a figure
perpendicular line
lines that intersect to form four right angles
pictograph
a graph that uses pictures to show and compare information
place value
the value of a place, such as ones or tens, in a number
probability
the likelihood that an event will happen
product
the answer to a multiplication problem
pyramid
a solid figure with a polygon base and triangular sides which meet at a single point
line symmetry
what a figure has if it can be folded about a line so that its two parts match exactly
quadrilateral
a polygon with four sides and four angles
quotient
the number, not including the remainder, that results from dividing
rectangle
a figure with opposite sides that are equal and parallel, and with four right angles
rectangular prism
a solid figure in which all six faces are rectangles
rhombus
a parallelogram with four congruent sides and with opposite angles that are congruent
right angle
an angle that forms a square corner and has a measure of 90 degrees
right triangle
a triangle that has one right angle
rounding
replacing a number with another number that tells about how many or how much
slide (translation)
a movement of a figure to a new position without turning or flipping it
sphere
a round object whose curved surface is the same distance from the center to all of its points
square
a polygon with four equal sides and four right angles
square number
the product of a number and itself
sum
the answer to an addition problem
trapezoid
a quadrilateral with only one pair of parallel sides
triangle
a polygon with three sides and three angles
turn (rotation)
a movement of a figure to a new position by rotating the figure around a point
two-dimensional
measured in two directions, such as length and width
vertex
a point where lines, rays, sides, or edges meet (also called a corner)
multiples
Numbers that are products of a given number and whole numbers. Some multiples of 6 are: 6, 12, 18, 24... (skip counting by the number)
tally chart
a table that uses tally marks to record data
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