| A | B |
| numerical expression | a math phrase with numbers and operations |
| simplify | to find the value of a numerical expression |
| variable | a letter that represents a number |
| algebraic expression | a math phrase with variables, numbers and operations |
| coefficient | the number in front of a variable |
| evaluate | to find the value of an algebraic expression |
| absolute value | the distance a number is from zero |
| Order of Operations | the process used to simplify an expression |
| operations | add, subtract, multiply and divide |
| -3 | the opposite of three |
| -(-3) | the opposite of negative three |
| |-3| | the absolute value of negative three |
| -|3| | the opposite of the absolute value of three |