I love using memory games in the classroom because the game requires students to constantly refer back to the math problems. :)
1. Laminate and cut the playing cards; also make copies of the score sheet if you plan on using it.
2. Students will place all of the cards face down. Then, each student will take turns picking up two cards and trying to find the match. I like students to work in groups of 3-4.
3. Students can use the score sheet to document how many decomposing pairs they found.