| A | B |
|---|
| variable | a value that changes and is represented by a letter |
| constant | a value that is always the same |
| equation | a mathematical sentence stating that two expressions are equal |
| expression | a mathematical phrase containing variables, constants, and operation symbols |
| inverse operation | an opposite operation that cancels another operation |
| the inverse of addition | subtraction |
| the inverse of subtracion | addition |
| the inverse of multiplication | division |
| the inverse of division | multiplication |
| balancing equations | making both sides of an equation equal |
