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Third Grade Math Vocabulary
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Module 1: Properties of Multiplication and Division and Solving Problems with 2-5 and 10
Terms in this set (63)
Array
A set of number or objects that follow a specific pattern; Drawing that shows objects arranged in rows and columns
Column
In an array, a column is the group going down
Commutative Property
The order which two numbers are multiplied does not change the product or answer.
Divide/Division
Splitting into equal parts or groups; fair sharing
dividend
A number to be divided by another number
divisor
The number you divide by
Equation
Sentence that has an equals sign (=) showing that two expressions are equal; e.g. 6 + 3 = 9
Fact/Factor
Numbers you multiply together to get another number
Multiply/Multiplication
An operation showing how many times a number is added to itself; repeated addition
Product
the result of multiplication; answer to multiplication problem
Quotient
the result of division; answer to division problem
Row
In an array, a row is the group going across
Tape Diagram
Tape Diagram Bar diagram shows the part-part-whole relationship between number
Unit
One segment of a partitioned tape diagram
Unknown
"missing" factor in multiplication or division; number that is not known in an equation - it is the number you are trying to find out. Sometimes it is shown as a blank, a question mark or even as a letter.
About ~
Means a close answer that may not be exact. This is used when rounding numbers or estimating
Addend
Number you add together in an addition equation
Capacity
How much a container can hold
Estimate
To make a good guess
Horizontal
Goes side by side
Interval
Time that has passed or the space between two tick marks on a number line
Liquid Volume
Unit of measure the space liquid takes up
Measure
To see how long or how heavy something is
Number Bond
A graphic showing part-part-whole relationship
Number Line
Numbers in order on a line that can be vertical and horizontal
Plot
Finding and drawing a point (or dot) on a number line
Point
Specific spot on a number line
Vertical
It goes up and down
Associative Property
When multiplying all numbers together, it doesn't matter which order you multiply them, the answer will still be the same; [96 = 3 X (4 X 8) = (3 X 4) X 8]
Decompose
Break a number apart into smaller numbers. This makes it easier to add, subtract, multiply or divide.
Distributive Property
Decomposes, or breaks apart, multiplication and division to make it easier to find the answer. e.g. [64 X 27 = (60 X 20) + (60 X 7) + (4 X 20) + (4 X 7)]
Equation
Number statement that has an equal sign (=) between two expression
Expression
Number statement that does not have an equal sign (=)
Product
Answer to multiplication problem
Area
Amount of space a shape takes up (inside of a shape)
Area Model
A model where factors (the numbers multiplied) represent the length and width of a shape
Associative Property
When multiplying all numbers together, it doesn't matter which order you multiply them, the answer will still be the same; [96 = 3 X (4 X 8) = (3 X 4) X 8]
Decompose
Break a number apart into smaller numbers. This makes it easier to add, subtract, multiply or divide.
Distributive Property
Decomposes, or breaks apart, multiplication and division to make it easier to find the answer. e.g. [64 X 27 = (60 X 20) + (60 X 7) + (4 X 20) + (4 X 7)]
Geometric Shape
A two-dimensional, or flat shape
Length
How long something is
Minuend
The first number in a subtraction problem. The number from which another number (the Subtrahend) is to be subtracted.
Square Unit
Unit of area where each side is equal- if we know the unit of measurement we say: square centimeters, square meters; if not, we say square units
Subtrahend
The number you subtract
Denominator
bottom number in a fraction; tells you how many total equal parts in a shape
Equivalent Fractions
Fractions that are the same size, or the same point on the number line
Fractional Unit
e.g. half, third, fourth
Greater Than >
One number is bigger or greater than another
Less Than <
One number is smaller or less than another
Numerator
top number in a fraction; tells you how many parts you are looking at
Partition
Divide or cut a shape into parts
Unit fraction
fractions with numerator is always 1
Whole
Shape that is partitioned, or divided, into smaller parts in a whole shape
Axis
Vertical or horizontal scale on the graph
Scale
Units are more than 1
Survey
Data, or information, that is collected by asking questions and recording or writing down responses, often on a chart or table
Table
Way to show and figure out data, or information, in an easy way to understand
Attribute
Characteristic of a shape: straight sides, no sides, number of corners (angles), colors, size
Parallel
Lines can run side by side and never touch, no matter how long or short they are
Parallelogram
Closed shape that has 2 sets, or pairs, of parallel lines.
Perimeter
Exact distance around a shape. Find perimeter by adding all side lengths together
Polygon
Closed shape that has 3 or more sides
Quadrilateral
Any closed shape with 4 straight lines and 4 corners (angles)
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