My students love playing Scoot. Here's a simple, fun way to have them practice solving for the missing addend. Print out the cards, cut and laminate. Place cards around the room, on desks. Students take their worksheet and walk from desk to desk to solve each equation. They must complete the part-part-whole box, then write the problem.
Great subtraction practice.
(An error was found within the file. I've corrected the error and added 4 more pages to this file. It now also contains a true-false sort for equations, along with a recording sheet.)