This is great for students to practice the distributive property. The answer choices have variations such as a missing sign so student's common mistakes are represented. All problems are included in the preview so you can gauge the appropriateness for your level of student. There are 10 problems in this scavenger hunt.
New zip file to combat file type issues. It is my understanding this will only be editable if you are able to use word 2010.
For students proficient at distributive property this activity would likely finish in 10 minutes or less, students learning it for the first time could take 20-30.
I've heard this lesson plan format called a "scavenger hunt" or "trail run". Each problem is hung on the wall (I recommend the use of page protectors so that students don't write on the paper.) I allow my students to work in pairs and travel at their own pace. Completed correctly students will circle through all 10 problems and return to their starting point. The order and key is provided on the first page (as well as in the sample). It is important to emphasize that students should not use process of elimination because that can result in a heavily errored order. I tell students to visit me at my desk if they are sent back to their starting place before they have done 10 problems.
Please email me with questions. This format of lesson is great for student engagement and gets them out of their seats and moving around talking about math!