Love these. Can't wait to use them next year. It is so difficult to get 3rd graders to stop, think, visualize, and do all of the things to figure out if their answers make sense or how to work the problem. These will help tremendously.
I am working with a small group on determining which operation to use in word problems... this is great! So many people focus on 'key words,' but this aims at understanding the purpose and intent of each operation. In particular, it's nice to have the double/half part in there -- I had that conversation just yesterday with some third graders in an unrelated unit!
I'm not a Mac user, but this is what the TpT help section says:
The PDF I downloaded is showing black smudges, what do I do?
You just need to update your Adobe Reader. If you are on a Mac, do not open with Preview. It will not work. Download the most updated version of Adobe Reader and open the PDF with it (and not Preview).