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# Math SOL Vocab K-3

### VDOE Math Vocabulary K-3

Angle a figure formed by two rays called sides having a common endpoint called the vertex
Area the number of square units needed to cover a surface
Array a set of objects or numbers arranged in rows and columns
Attribute a quality or characteristic, such as color, thickness, size, and shape
Bar graph a type of graph used to display data organized by categories
Calendar a tool for measuring time in days, weeks, months, and years
Circle a closed curve with all points in one plane and the same distance (radius) from a fixed point, the center
Classify to sort into groups according to attribute(s)
Commutative Property of Addition changing the order of the addends does not affect the sum 6 + 7 = 7 + 6
Cardinal Number numbers used for counting or answering the question "how many?" Associated terms: ordinal number
Certain (probability) An event is certain to occur if it has a probability of 1.
Commutative Property of Multiplication changing the order of the factors does not affect the product 8 x 6 = 6 x 8
Cone solid figure with a usually circular base joined to a vertex by a curved surface Associated terms: geometric solids
Congruent figures with exactly the same size and shape
Cube solid figure with six congruent, square faces; all edges are the same length; has 8 vertices, 12 edges Associated terms: geometric solids
Cylinder solid figure with two congruent, parallel, usually circular bases joined by a curved surface. Associated terms: geometric solid
Cylinder solid figure with two congruent, parallel, usually circular bases joined by a curved surface
Cylinder solid figure with two congruent, parallel, usually circular bases joined by a curved surface
Data pieces of information collected to answer a question
Denominator the number of equally-sized parts that make the whole or the complete set Associated terms: fraction
Diagonal a line segment that joins two non-adjacent vertices in a polygon
Difference the distance between 2 numbers on a number line; the answer to a subtraction problem
Digit there are 10; any one of the symbols, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
Edge in a solid figure, a line segment where two faces of the solid meet. Associated terms: geometric solids
Equal having the same amount or value
Equally likely outcomes outcomes that have the same probability. Associated terms: probability
Equation number sentence; a statement that two expressions or numbers are equal
Equivalent having the same value.
Even number any number ending in 0, 2, 4, 6, or 8. Associated terms: odd number
Event an outcome or set of outcomes of an experiment or situation; for example, getting a 3 is one possible event produced by a rolling a fair number cube. Associated terms: probability
Experiment in probability, any activity involving chance. Associated terms: probability
Face A polygon that serves as a side of a solid. Associated terms: geometric solids
Fraction part of a group or part of a whole
Geometric solids three-dimensional figures such as cone, pyramid, prism, cylinder
Identity properties addition: if 0 is added to any number, the sum is the same as the given number 8+0 = 8multiplication: if a given number is multiplied by 1, the product is the same as the given number6 x 1 =6
Impossible (probability) an event is not possible if it has a probability of 0. Associated terms: certain, probability
Inverse Operations operations that undo each other; addition, subtraction, multiplication and division
Line has no definition; described as a set of points that goes on and on in both. has no definition; described as a set of points that goes on and on in both directions; has no endpoints; has 1 dimension directions; has no endpoints; has 1 dimension
Line of Symmentry a line dividing a figure or an arrangement of objects into two parts that are mirror images of each other
Line plot a type of graph used to display data; in a line plot, each piece of data is represented. Associated terms: axis
Line segment part of a line that has two endoints
Mass the amount of matter in an object; weight is determined by the pull of gravity on the mass of an object; mass of an object remains the same regardless of its location; weight of an object changes depending on the gravitational pull at its location
Mixed number a quantity expressed as a number and a proper fraction
Number sense equation: 3 + 4 = 7; 8 - 2 = 6
Numeral a symbol representing a number
Numerator how many equal parts of the whole or set we have; the number of equal parts of the whole or set being considered. Associated terms: fraction
Odd number any number ending in 1, 3, 5, 7, or 9. Associated terms: even number
Ordinal number a number that names the place or position of an object in a sequence or set. Associated terms: cardinal number
Outcome (probability) result of an experiment. Associated terms: probability
Pattern numbers or objects that follow a repeating or growing rule
Perimeter the distance around any two-dimensional figure
Picture graph a data display that use pictures to represent the data
Place value the value a digit represents depending on its place in the number
Plane has no definition; described as a flat surface; has 2 dimensions. Associated terms: line, point
Plane figure a figure that lies in a plane; a two-dimensional figure
Point cannot be defined; is described as an exact location; has no dimension. Associated terms: line, plane
Polygon a closed plane figure composed of line segments that do not cross
Position location of an object relative to another(above, below, next to, beside, near, far, close by, below, above, up, down)
Probability the chance of an event occurring
Product the answer in multiplication
Quadrilateral a polygon with 4 sides
Quotient the answer in division
Ray part of a line that starts at a point (the endpoint) and continues forever in one direction. Associated terms: line
Rectangle a quadrilateral with 4 right angles (all three shapes below are rectangles)
Rectangular prism a solid in which all 6 faces are rectangles. Associated terms: geometric solids.
Sample Space all possible outcomes of an experiment. Associated terms: probability
Set a collection of distinct items or elements
Sort classify. Associated terms: attribute
Sphere a three-dimensional object with all of its points the same distance from its center. Associated terms: geometric solids
Square a rectangle with all sides congruent. Associated terms: quadrilateral, rectangle
Square pyramid a solid with a square base with 4 sloping triangular faces that share a vertex.Associated terms: geometric solids
Standard form of a number a method of writing numbers
Statistics the collection, organization, and analysis of data