| A | B |
|---|
| Order of operation | a set of rules used in mathematics |
| Variable | a symbol that stands for unknown numbers |
| Numerical Expression | contains only numbers and operation symbols |
| Variable Expressions | contains at least one variable with a number and then simplify |
| Equation | is a mathematical sentence that contains an equal sign |
| Solve | an equation, replaces the variable with a number that makes the equation true |
| Solution | the number that makes the equation true |
