
1.  A statement that equates two equivalent expressions. 
7.  A word equation that represents a reallife problem. 
8.  An ________ expression is an expression with variables. 
10.  Two algebraic expressions are ________ if they have the same value for all values of their variable(s). 
12.  The number in a power that represents the number of times the base is used as a factor. 
15.  A statement in which two expressions are equal. 
16.  The ________ of an expression are the parts of an algebraic expression that are added together. 


2.  A ________ expression is an expression that consists of numbers, operations, and grouping symbols. 
3.  A letter that is used to represent one or more numbers. 
4.  The ________ of an expression is the result when the variables in an algebraic expression are replaced by numbers and the expression is simplified. 
5.  The number that corresponds to a point on a number line. 
6.  Numbers that can be written as the ratio of two integers are called ________ numbers. 
9.  The numbers ... , 3, 2, 1, 0, 1, 2, 3, ... 
11.  The point on a number line that corresponds to a number is called a ________ of a real number. 
13.  A set of rules that gives the order in which operations should be performed when evaluating expressions. ________ of operations. 
14.  An expression such as 2^{5}, which represents 2 · 2 · 2 · 2 · 2 = 32. 