Only $1.00 INTRODUCTORY PRICE - Yes, 3 sets of 30 cards with answer key and a blank page so you can create your own.
Practice, practice, practice -- Add, subtract, multiply, and divide with negatives and positives. I use these in my Foundations of Algebra class, but they can be used from 6th grade through Algebra. Hey, I even have some seniors that need a refresh on how to calculate without a calculator.
My favorite way to use them is to cut them out and place on the white board with magnets. I number the board 1-30 and place the cards beside the numbers. The students get up and take a couple of cards back to their desks. If there are a lot of students in the class, I print two sets and have one for the girls and one for the boys.