# Chapter 1 Variables, Expressions and Integers

- StudyBlue
- Illinois
- Shelbyville High School
- Pre algebra
- Watson
- Chapter 1 Variables, Expressions and Integers

**Created:**2011-06-21

**Last Modified:**2011-06-21

consists of numbers and operations

substitute a number for each variable and evaluate the resulting numerical expression

base

number used as the factor

number used to know how many times to multiply the factor

a set of rules used to evaluate expressions; PEMDAS

parenthesis; exponents, multiplication, division, addition and subtraction

negative integer

the result of subtracting two numbers

the middle value when the values are written in numerical order - if the values are even then the mean of the two middle values are used

the point where the axes meet

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