3rd Grade Math - Understanding Multiplication & Division
fact family
A group of related inverse facts that use the same numbers
variable
A letter or symbol that stands for a number or numbers
expression
A mathematical phrase that contains operations, numbers, and/or variables.
equation
A mathematical sentence that contains an equals sign.
area model
A model of multiplication that shows the product within a rectangular drawing.
related facts
A set of related addition and subtraction, or multiplication and division basic fact number sentences using the same numbers. Fact Families
array
An arrangement of objects in equal rows.
missing factor
An unknown factor in multiplication
Commutative Property of Multiplication
Changing the order of the factors does not change the product. ab = ba
equal groups
Groups that have the same number of objects - see words like rows, packages, bags, boxes, shelves
dividend
In a division problem, the number to be divided
times as many
Multiply as many times. (3 times as many is same as 3 x's )
inverse operation
Operations that undo each other, such as addition and subtraction or multiplication and division
product
The answer to a multiplication problem
divisor
The number by which the dividend is divided
multiple
The product of a number and a counting number is called a multiple of the number
Identity Property of Multiplication
The product of any number and 1 is that number. a x 1 = a
Zero Property of Multiplication
The product of any number and zero is zero
place value
The value of a digit based on its position within a number
multiply
To combine equal groups to find how many in all; the opposite operation of division
arrange
To put in a certain order, to display
divide
To separate into equal groups; the opposite operation of multiplication
factor pair
Two whole numbers that are multiplied to get a product
Factor
a number that is multiplied by another number to find a product
rectangle
a quadrilateral with four right angles
factor
any of the numbers (or symbols) that form a product when multiplied together
inverse operations
operations that undo each other, such as addition and subtraction or multiplication and division. Opposite operations.
situation
story, event, or scenario that can be solved with math
row
the horizontal, equal groups in an array
quotient
the number obtained by division or the answer to a division problem
column
the vertical, equal groups in an array
separate
to set apart into groups
display
to show, to arrange