Terminology 
Definition 
Illustration 
Array 
a set of numbers or objects that follow a specific pattern 




Associative Property of Multiplication 
changing the groupings of three or more factors does not change the product 




Column 
a vertical arrangement of numbers or information in an array or table 




Commutative Property of Multiplication 
changing the order of the factors does not change the product 




Decompose 
to separate a number into 2 or more parts 




Distributive Property 
when one of the factors of a product is a sum, multiplying each addend before adding does not change the product 




Divide 
to separate into equal groups and find the number in each group or the number of groups 




Equal groups 
Groups that contain the same number of objects. When dividing, items are separated into equal groups. 




Equation 
a statement that two expressions are equal 




Expression 
a mathematical phrase without an equal sign 




Factors 
numbers that are multiplied to obtain a product 




Multiply 
an operation showing how many times a number is added to itself 




Number bond 
a pictorial representation of partpartwhole relationships
the smaller numbers (parts) make up the larger number (whole) 




Product 
the answer to a multiplication problem 




Quotient 
the answer when one number is divided by another 




Row 
a horizontal arrangement of numbers or information in an array or table 




Tape diagram 
a method for modeling problems 




Unit 
one segment of a partitioned tape diagram 




Unknown 
the "missing" factor or quantity in multiplication or division 




Value 
how much 
