These cards are an excellent way for students to practice integer operations in small groups! I love to use these as a a station when we do rotations because these skills are always a topic that needs reviewed, and it requires very little supervision after they are taught initially. The game is played just like the classic war card game. It can be played with pairs, small groups, or even independently as flash cards. You could also use these as task cards! The set comes with 36 of each operation