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81 terms

Vocabulary necessary to pass the Oregon 5th Grade Math Benchmark test.

quadrilateral

A polygon with 4 sides.

triangle

A polygon with 3 sides.

acute angle

An angle less than 90 degrees.

addend

A number added to another number. Both numbers are addends.

angle

Two lines coming out of one point.

diagonal

Having a slanted direction.

difference

The answer to a subtraction problem.

face

The flat surface of an object.

hexagon

A polygon with 6 sides.

obtuse angle

An angle with greater than 90 degrees.

octagon

An 8 sided polygon.

pentagon

A 5 sided polygon.

perpendicular

Intersecting at right angles.

polygon

A closed figure made with three or more line segments.

product

The answer to a multiplication problem.

quotient

The answer to a division problem.

prime number

A positive integer that cannot be divided by another number other than itself and one without a remainder.

ray

A half-line extending from a point.

right angle

An angle that is exactly 90 degrees.

square

A quadrilateral with 4 equal sides and 4 90 degree angles.

sum

The answer to an addition problem.

vertex

A point that 2 figures intersect at.

whole number

Positive integers and 0

mean

Average

mode

The number(s) in a set that occurs the most.

range

A list of the numbers in the set, usually in number order.

Median

Order the set of numbers from highest to lowest and the number right in the middle is the median.

area

Measurement of a surface in square units.

congruent

Two figures that are the same size and shape.

equation

An array of symbols that are separated into left and right sides and joined by an equal sign.

equilateral triangle

A triangle with 3 equal sides.

isosceles triangle

A triangle with at least 2 equal sides.

scalene triangle

A triangle with 3 unequal sides.

parallel

Lines that do not intersect.

parallelogram

A quadrilateral with opposite parallel lines.

perimeter

The length around the outside boundary.

irregular polygon

A polygon with not all sides the same length.

rhombus

A parallelogram that opposite congruent angles and sides. Ex: a square that appears to lean.

volume

The amount of space a solid body takes up in cubic units . V = L x W x H

trapezoid

A quadrilateral with only two parellel sides.

numerator

The number on the top of a fraction.

denominator

The number Down on the bottom of a fraction that represents the total.

factor

Numbers multiplied together in a math problem.

remainder

What is left over (1) in a division problem. Example: 13 divided by 2 = 6 r1

dividend

A number (54) that is divided by another. Example: 54 divided by 6 = 9

divsor

The number (6) that is divided into another. Example: 54 divided by 6 = 9

symmetry

When a shape can be divided in equal halves that reflect each other. Ex: when you can fold a shape in half and they exactly mirror eachother.

circle

A set of points on a plane that are equal distance from a center point.

circumference

The perimeter of a circle. Circumference = 2 pi(3.14) radius = pi(3.14) x diameter

diameter

The distance from a point on the circle through the center point to the opposite point on the other side.

radius

The distance from a point on the circle to the center point.

cone

a pyramid with a circular cross section.

consecutive numbers

Numbers that come immediately after a given number.

cube

Six square faces that meet at right angles and has eight vertices and 12 edges.

cylinder

A prism (3-D) shape with round edges and 2 flat parellel circular bases. Example: a soup can.

decimal point

The symbol used to separate the whole number part from the fractional part of a number.

equal

Having the same value as another.

greatest common factor (GCF)

The highest valued factor that numbers have in common.

inequality

Not being equal.

least common multiple

The lowest multiple that numbers have in common.

lowest terms

A fraction that has had all of the common factors canceled out.

ordered pair

A pair of elements x and y from a set, written (x,y), where x is the first and y is the second.

estimate

To calculate something approximately.

place value

The value given to a digit by its location in a numeral.

proper fraction

A fraction that the numerator is less than the denominator.

improper fraction

A fraction that the numerator is equal or larger than the denominator.

Roman Numerals

Numeric symbols formed with the Roman letters I, V, X, L, C, D, and M.

rotation

To rotate an object.

symbol

Something that represents something else often defined in a key or legend.

Venn diagram

A diagram using circles of sets, with the position and overlap of the circles indicating the relationships between the sets.

width

The measurement from side to side.

height

The distance from the base of something to the top.

depth

The measure of how deep something is.

translation

Sliding an object in a constant direction. Translation = Slide

degree

Angle measurement

percent

A ratio that compares a number to 100. Ex: 43 out of 100 = 43%

ratio

Comparing two numbers using division. Ex: 43/100

multiple

A product of a whole # and another number. Ex. Count bys: 4, 8, 16

data

Information collected and organized to look at.

regrouping

Borrowing or adding to the next 10 column.

flip

A reflection of what it was.