There are 60 warm ups created with answer pages attached. It covers topics covered first semester in Algebra 1 and is good for spiraling back. The can be used as exit tickets as well.
I have students get the warm ups on the way into class and they work on it while I am taking attendance. No wasted time here. :) Sometimes we go over them and others we do not. I have done this a couple of ways and had them turn them in for a grade or at the end of the week they turn them in with work shown. I know which ones I have gone over and which I need to grade. If students are absent they still must complete them to be turned in at the end of the week.