This product has the students identifying if the product or quotient is correct or incorrect to a problem. There are 20 cards with a completed problem on them. The student has to identify if the answer is correct or not. If it is incorrect they have to write down the correct answer. I have included a sheet for them to put their answers on. This can be used for review, centers or even just a quick activity. I have split the cards up into two sets of ten. Therefore you can do this two different times or one time with all 20 cards.