All words need to be learned by the end of the

year.

5th Grade Math Vocabulary Words

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31

Questions 1 - 31

Either of two lines drawn perpendicular to each other in a graph.

Axis/Axes

One of two marks used to indicate that the enclosed quantity is to be treated as a unit.

{ }

Braces

One of two marks used to indicate that the enclosed quantity is to be treated as a unit.

[ ]

Brackets

One of many groups organized by type.

Category

A Coordinate Grid that extends to include both positive and negative

numbers.

Coordinate Plane

The two numbers in an ordered pair.

( 5, 7 )

Coordinates

The portion of the graph where x and y coordinates are positive.

X>0

Y>0

First Quadrant

The different layers or levels of importance of something. The most important being at the top (or solved first). The term used

to define an order within a specific set.

When solving a mathematical equation, evaluate terms in the following order: ( ), then [ ], then { }

Hierarchy

Parallel to level ground; flat or level position. A line (or movement) that goes right and left in direction.

Horizontal

Lines that cross at one point.

Intersection of Lines

A straight path of points that goes on forever in two directions.

Lines

The volume of a given amount of liquid, i.e., the amount of space a liquid takes up.

Liquid Volume

A pair of numbers that names a point on a coordinate grid.

( 5, 1)

Ordered Pairs

The point where the two axes of a coordinate plane intersect. The _____ is represented by the ordered pair ( 0, 0 ).

Origin

One of two marks used to indicate that the enclosed quantity is to be treated as a unit.

( )

Parentheses

An exact location in space.

Point

The use of logic in the formation of judgment, conclusions and inferences. Used to solve mathematical problems.

Reasoning

An arrangement of objects into rows and columns that form a rectangle. All rows and columns must be filled. Each row has the

same number of objects and each column has the same number of objects.

Rectangular Arrays

A solid figure whose faces are all rectangular and all angles are right

angles.

Right Rectangular Prism

A subordinate category or a division of a category.

Subcategory

Thousands

A cardinal number, 10 times 100. The position of the 4th digit from the right of the decimal point.

_ _, _ _ _ . _ _

One out of 1,000 equal parts of a whole. The position of the 3rd digit from the left of the decimal point.

_, _ _ _, _ _ _ _ . _ _ _ _

Thousandths

A rational number written as a fraction where the numerator is one and the denominator is a positive integer.

1/n, 1/1, 1/2, 1/4, 1/8, 1/9,

Unit Fraction

Being in a position or direction perpendicular to level ground; a line (or movement) that

goes up and down in direction.

Vertical

The second number in an ordered pair, which names the distance up or down

from the origin along the y-axis.

( 5, 3)

Y-Coordinate

The number of cubic units needed to fill a solid figure.

Volume

The horizontal line that includes both positive and negative numbers.

X-Axis

The first number in an ordered pair, which names the distance to the right or left from the origin along the x-axis.

(3, 5)

X-Coordinate

A vertical line that includes both positive and negative numbers.

Y-Axis

A system which uses a set of numbers or coordinates to determine the position of a point.

Point A is at ( 2, 4)

Point B is at (2, 2)

Coordinate System

A

B

Numbers that name the same amount.

Equivalent