I print the two sheets front and back then cut in half vertically. I keep a file of extra copies in a file folder pocket chart.
Once a week, I assign a homework quiz at the beginning of class. I choose 5 questions from the previous day's homework that I want to grade. The students copy each of the five problems directly from their hw assignment. When they turn the HWQ in, we go over the assignment. I will have a copy to grade and it doesn't keep us from going over it.
I keep all their HWQs in hanging folders with their name and number on them. If parents want to see what they are doing, I can show them.