Common Pre-Algebra Mistakes
Example: Simplifying a Fraction |

The Goal
Simplify the expression:
The Mistake
What the student wrote:
With a step added to show what it appears was computed in the student's head, find the mistake: (Roll the mouse over the algebra to see a hint in red) The Correction
(Roll the mouse over the area above to see the correction in blue) An Explanation
Use care with signs. A good strategy is to
Visit Algebra Facts > |

Home Page |
Common Algebra Mistakes |
Privacy Policy |