In this PDF, you will find more than 30 cards with which to practice missing addends. Frames for the sum have been built in to the cards. On the frame, the addend that appears in the equation is represented by that number of eggs on the frame.
At the end of the packet, you will find a recording sheet for the students.
I have also created a Promethean Flipchart to go along with this. It is the same exact cards, but has a the matching egg manipulatives that the students can drag into the frames.
It is also in my TPT store.