6th Math: Unit 6: Equations and Inequalities

Operations which undo each other (for example, addition and subtraction)

To replace a variable with a value that results in a true sentence

The value of a variable that makes an equation true

If you subtract the same number from each side of an equation, the two sides remain equal

A mathematical sentence indicating that two quantities are not equal

If you divide both sides of the equation by the same number, the two sides remain equal

A strategy used to solve a problem which involves narrowing in on the correct answer using educated guesses

A mathematical sentence showing two expression are equal.

If you multiply both sides of an equation by the same number, the two sides remain equal.

If you add the same number to each side of an equation, the two sides remain equal