Use this combining like terms puzzle as a math center activity to practice combining positive and negative like terms.
Print the 21 puzzles on cardstock (and laminate for durability). Mix up the cards and have students work to match the equivalent equivalent expressions. Both adding and subtracting positive and negative terms are included. Have students record their answers on the included answer sheet. You can also turn this into a game by having students race to finish first!
Purchase this activity along with three others in my: Combining Like Terms Activity Bundle