This product has 21 pages. There are 7 pages of addition practice cards and 7 pages of subtraction practice. Each page has 4 different problems. There are problems that your students need to use regrouping to solve and those that they will not need to use regrouping. There are three answer choices for each problem. Under the answer choice is a star. You will need to punch out each star with a hole punch. You will need to draw a circle on the back of the card around the hole with the correct answer. This will then become a self checking activity. The addition and subtraction problems are on different graphics so you can use this as two different centers. Laminating the cards will let your students use them over and over again. You can punch a hole in each card on the upper left hand side and put a ring through it to keep all your cards in one place
I use this as a math learning center activity. This is a great review opportunity. I also use this at the beginning of the year to see if there are any holes in their math knowledge that we will need to fix.
I hope you enjoy this product.