3rd Grade Math - Understanding Multiplication & Division

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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


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